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There is an old php base website which provides a single service and is working for many years. Now we have decided to change the website itself to become more modern and faster and at the same time providing an app for it and we are going to hire some people for that. As I'm a developer myself (a c++/go fan and mostly in machine learning area) I want to know what are the best options to choose when such thing is needed. I personally think that the whole back-end should work as a RESTful API and then probably something like react and react-native in front for both web and mobile but I'm not sure if this is the best decision we can make.
I want to know what other people with same requirements have done ? Some people recommended us meteor but it seems to be changing very fast and we really need some stable and mature solution without too much maintenance.
Looking forward to hearing your suggestions
I'm a big fan of the REST API + front-end JS framework architecture.
One option would be to build an API with Ruby on Rails. The "rails generate new" command includes an --api option for generating a Rails application that lacks views and serves JSON. You can learn more about building APIs with Rails on the rails-api gem GitHub page. (Keep in mind the rails-api gem has since been rolled into Rails proper.)
Overall, Rails is a fast way to get a services layer up and running. It's fairly simple, and might be a good option for your app, which as you said, provides just one service. However, Rails is also powerful enough to support a much more substantial API.
If you want a REALLY simple Ruby-based services layer, you should check out Sinatra. You could also go full Javascript with Express. It's about as simple as Sinatra.
If you have a background with C++ and Go, you may not want to jump headfirst into these web-heavy technologies. Consider using Java Spring for your services layer. (I would link but I don't have enough rep. Haha)
As far as the front-end goes, you're on the right track with React and Meteor. I'm personally a fan of Angular (specifically Angular 2). It's a really popular JS web app framework -- great for asynchronous Javascript and single page applications. Granted, Angular has a steep learning curve to start, but if you're willing to climb, it pays off.
Let me know if you have any specific questions! Good luck.
Meteor is a bit heavy if all you want is a web site. It depends how much interactivity you want - if it's more of an app, then it's worthwhile doing, and if you want to do ios and android apps, then Meteor is pretty fast to get up and running.
I would recommend to choose a technology that either you are keen to learn, or you have some skills in already. Learning curves mean longer projects.
If you need native mobile application and interactive site than react and react-native with pure API server is a really good solution. I developed several similar services and very satisfied with this combination.
First of all you can share API access layer and part of business logic between both clients.
Second you are using identical technologies on mobile and web. However mobile application has real native UI because React Native don't use browser.
Thirdly server becomes more simple, maintainable and scalable.
Personally I prefer WebSockets as network protocol (look at amazing Go gorilla websocket implementation). But if you need support old browsers or prefer more classic REST API than it's ok also.
Answering based on my comment above, this is all opinionated, but I find that Node/JavaScript tends to be about the best bang for the buck, if all you are trying to do is get through proof of concept stage, and possibly scaling from there. Depending on your back-end needs, you may want to migrate parts, or whole to Go or Python.
On the Front end, using web tooling (mostly centered around node and npm), I would build the primary UI with React and the material-ui components... Targeting a web/browser interface... you can then extend this, in order to support more native-like features. You can build "native" versions using Cordova for Android and iOS. You can use electron as a base for desktop versions.
For the backend, node is a nice place to start, and I feel RethinkDB is a great database for many use cases (despite the changes from commercial to open platform happening now). Mongo is another option, and there are hosted/managed options through a few providers. Alternatively, I'd probably lean towards PostgreSQL via Amazon.
The API server, I'd definitely do a first pass with Node, and then, as needed rewrite whole, or in parts with Go or Python... Go will have better performance and scale without compromising some of the ease of development aspects. Python has very rich tooling, if you need more flexibility than performance for some areas. There are other options, C# is becoming a very good cross-platform option, which I happen to really appreciate as a language. The performance there is very good, though you may find some constraints less appealing than JS or Python.
YMMV with any of these choices.
Related
Background: I have created a CRUD web app using a java based RAD tool called Wavemaker. I am considering developing the app again in a framework that has greater support. Even though I have some experience in development I still get confused by all of the terms. My understanding is that there are languages (C#, PHP, Javascript, Java, etc), frameworks (Wavemaker, Ruby on Rails, Yii, Symfony, Code Igniter, Zend, etc) and editors (Dreamweaver?)?
I outsourced the development of a mobile version of my web app and this was created using jquery mobile, php and ajax. I started using Dreamweaver because I read it had integration for development with jquery mobile and hence I could perform modifications on my mobile app.
I was wondering whether Dreamweaver was a viable choice for the development of a CRUD web app? I used dreamweaver many years ago for the create of html pages and it would automatically create a lot of "unclean" code that made it hard to maintain. I fear that I would put myself in a similar situation here with server-side code.
If Dreamweaver is not appropriate could you kindly suggest a framework that may meet my requirements?
The main things I liked about Wavemaker:
Drag and drop widgets
A lot of the database functions were automatically handled
The main things I don't like about developing with Wavemaker (not Wavemaker itself):
Support: The support generally involves posting to the forums and hoping for a reply that may never come. I would rather paid support over this option which to be fair is offered by vmware but I found it too confusing.
Small number of freelance contractors: Much of the functionality within my app required coding or workarounds outside of the standard features of wavemaker and it is very hard to find a freelance wavemaker developer for help
Ongoing bugs that cause a headache during development
With that being said my priorities are:
Support: great documentation with rapid response to problems (even if this requires a paid subscription)
A large number of freelance contractors available (I guess this means a popular framework using a popular language).
Simple and easy to use (I understand there would be an initial learning curve)
Stable: I won't be running into bugs that hold up my development and need me to wait for the next release for a fix
The ability to incorporate reporting like BIRT reports or Jasper.
Possibly steer clear of Java as I have found Tomcat to be an extra level of complication that it would be great to do without.
Any help would be greatly appreciated.
Thanks.
Dreamweaver was a viable choice for the development of a CRUD web app?
Yes, but with caveats. It still does not produce code that advanced users would consider "clean" but the integration of JQuery Mobile in CS5.5 makes it a good choice for non-coders or beginning coders who need to spin up rapidly and will worry about elegance later.
That being said, if you are outsourcing the design it is likely that the code you get back will be editable in Dreamweaver but not written in such a way as to take advantage of Dreamweaver's built-in behaviors (automatic code writing). Dreamweaver expects to see code written to its specs in order to take over for the user. If not, it is still a great wysiwyg editor and above-average code editor.
But it's not a framework. In your sitution, JQuery Mobile is the framework and any JQuery Mobile developer should be able to step in and run with the project. But if you write big chunks of the CRUD using Dreamweaver, developers may tell you that they will want to rewrite those sections. Some won't care.
There are must be a lot of apps that are designed to communicate with server. My question is only about App installed on iOS device + Server side service interaction. Web app is not what I am talking about, and there should be no webpage involved in this discussion at all. Typical examples are Apps like Instagram and Twitter, in which most of the information exchanged between the App and the server is just data like String, Image and Integers(wrapped in JSON or XML), no webpage presentation needed.
My question will be: if you are an independent app developer, and you are designing such an app from scratch without any existing website API, database structure or application(so you are not limited by any existing API or database structure or application protocol), What will be the most efficient approach?
What the sever side need to do are:
receive data send by the App;
process the data with designed logic;
interact with database(like MySQL);
do necessary data mining and analysis---this could be a constantly running service or one time task requested by the App client;
send the data back to the App upon request or spontaneously;
exchange or broadcast the data between/among different App clients (i.e.: group chatroom and peer to peer message);
As far I as know there are 3 obvious options to implement the server side:
PHP
Python
Ruby on Rails
(please feel free to add more options)
My questions are:
which one is the most appropriate choice to implement the server side?
If the App is focusing intensively on natural human language/text searching, analyzing and data mining, which one is the best choice? I heard Python is doing pretty good in this area.
Any advice on the database choices? I am using MySQL for now, and I found it's quite powerful for my purposes, I heard Twitter is switching to Cassandra. Will that be too difficult to start with?
For the server end, if you need to build a Server management interface, for you as an admin to manage and monitor the community, membership, data and such, is there any existing solution, or framework or tool for that? what will be the most efficient approach?
If a new programmer has no experience in non of them, which one you suggest he/she to start with?
Is there any good reference material or sample code on the server side in such context we can learn from?
I know there are a lot of very experienced experts on these areas on Stackoverflow, but I saw more newbies who just entered the iOS developing area without much knowledge in server/database programming experience. And I hope this thread can help these who are thinking to design an App with server/client structure but have no idea where to start with.
ps: I will keep updating this question thread and adding my findings on this topic, to help all other users at stackoverflow. :-) Please try to make your answer informative, easy to understand, and constructive. I guess most of readers for this thread will be new members of this great community.
Are you sure you want to spend time & money to develop your own Server & develop your own API?
There are lots of mBaaS (mobile Backend as a Service) providers today such QuickBlox, Parse,StackMob, which are ready to use and they have great Custom Objects API and some of predefined modules. They have great free plans with big quota. Some of them such QuickBlox has Enterprise plan - so you can buy license and they server team update server for you purpose.
So, i recommend not develop your server and think about mBaaS market.
Just about your issue - I can recommend look at QuickBlox Custom Objects code sample and also Custom Objects API. Custom Objects module provides flexibility to define any data structure(schema) you need. Schema is defined in Administration Panel. The schema is called Class and contains field names and their type. I think it's what you need.
which one is the most appropriate choice to implement the server
side?
Well that depends on what you know, there is reason to choice one of the other
If the App is focusing intensively on natural human language/text
searching, analyzing and data mining, which one is the best choice? I
heard Python is doing pretty good in this area.
This would reflect on your first question, you pick the language on you needs. Thus if python makes it easier then pick that one.
Any advice on the database choices? I am using MySQL for now, and I
found it's quite powerful for my purposes, I heard Twitter is
switching to Cassandra. Will that be too difficult to start with?
Again not one that is easy to answer, since it all has to do with requirements. But any SQL server will do. Cassandra is meant for "scalability and high availability without compromising performance" accourding to there website. Do you think you webservice will get many request then it might be a choice to consider.
For the server end, if you need to build a Server management
interface, for you as an admin to manage and monitor the community,
membership, data and such, is there any existing solution, or
framework or tool for that? what will be the most efficient approach?
This again is only going to be answered when you pick the a SQL server and server language.
If a new programmer has no experience in non of them, which one you
suggest he/she to start with?
Start with something simpler, you are really going out on a limb here.
Is there any good reference material or sample code on the server
side in such context we can learn from?
Propably there is some, but you should really start small and work from there.
Twitter started out as a Rub on Rails app and is working on scalability and availability which ruby is not really good ar (that is my person opinion). or Look at facebook they have written a php to c compiler to make php run faster.
The only thing I can say to start code, when you app does take off then tackle the some of the performance issues.
And since you state that you are new to programming do not bite of more then you can chew.
This is a huge question and I don't think there is a best answer. It most depends on what you care about, such as how quickly the development process, how easily the implementation, etc.
And which one is popular, which one is cool, I don't think it make really sense.
In my personal opinion, I'm good at ASP.NET and I can get Windows server easily, so I'll start with an ASP.NET service to provides data.
And, to be continued.
I am working with a friend on building a web site, in general this web site will be a custom web app along with a very custom social network type of thing..
Currently I have a mock-up site that uses simple PHP with AJAX and JSON and JQUERY and I love how it works, I love the way it all fits together.
But for a mock-up I did not implement any of the Social Network design patterns such as a login, rating, groups etc..
This brought me to a higher level of decision making requirement, I need to decide if I want to develop all this functionality by hand or use some kind of a framework.
I spent this entire day researching, and it would seem that using Drupal and such frameworks will make the Social Network part easy (overlooking the customization requirement for now..) but will make client side Web App development less so.
I found some other frameworks that are more developer friendly (customizable) such as Zend and Symfony etc.. but these seem to take allot of the power from the client and implement it in the server side, to me this seems a waste (and an unjustified performance bottleneck) ..
Finally I found Aptana Jaxer framework that seems to think the same way I feel.
That said it seems a bit under-developed, I didn't find modules for a social network and the community around it seems thin.. (searching Jaxer in StackOverflow returns few results)
So other then making server side DB comm a bit simpler it does not help me greatly..
My requirements are a good facility to develop web apps on while containing all the user centric logic usually used for social networks in advance.
What would you recommend?
EDIT:
OK, lats fine tune this question, after considering this abit further, is there a good down loadable source of a social network site in PHP that I can work around in building my web app? (I really like using JQUERY AJAX JSON etc..)
if you want to develop a social networking site from scratch, i recommend using zend-framework as a server side framework and jquery as a client side framework.
they have a lot of library which you can use such as zend_auth,zend_acl for user authentication system and Zend_Search_Lucene for search facilities and zend_gdata for youtube videos and so on.
but you can also use one of the several social networking engines available out there.
here is a link:
http://www.best-php-scripts.com/social_networking.htm
I think it depends on the goal your trying to achieve.
Personally, I tend to like to keep things simple and to decouple complex
things in smaller components, so it's easy to stay in control when you'll
incrementally add new features.
Ajax or a server-side framework ? I'd say that they're not necessary overlapping
each others. However some (server-side) frameworks tends to wrap everything in a
single zipped package to make things easier for beginners. I personally don't
like this avenue because it will make your web app dependable on this framework.
Thus, nothing prevents you to use one client-side framework for the presentation
logic and another one for server-side/business logic.
Hth,
Etienne
I realize that this may be subjective but I truly need an answer to this and I can't seem to find anything close enough to it in the rest of the Forum. I have read some folks say that the framework (any MVC framework) can obscure too many things while others say that it can promote good practices. I realize that frameworks are great for a certain level of programmer but what about individuals starting out? Should one just focus on the language or learn them together?
I think web development is way more than anyone grasps when they first start getting into it! Read this and know that it is all optional...but required to be really good at what you do.
I suggest that you spend time learning your language first. I would suggest learning C# simply because it is vastly more marketable and it is usually directly supported in most of MS products. By learning C# - programming in ASP.NET, console apps, servers, services, desktop apps, etc. will all be within your reach. You can program for most of the MS products as well as on many Linux type platforms.
Once you have this down then you can move to programming for the web as programming for the web has some intricacies that most other environments don't have. Concepts such as sessions, caching, state management, cross site scripting, styling, client side vs server side programming, browser support, how HTTP works, get vs post, how a form works, cookies, etc. are all at the top of the list of things to learn separately not to mention learning the ASP.NET base frameworks and namespaces.
Once you have the programming language down and then the concepts of web programming I suggest that you pause and learn database design. Don't worry about performance just yet...try to first learn good design. Performance will come next. A good start for you is Access (blasphemy I know). It is easy for a beginner to work with. And it translates into a more robust platform such as SQL Server easily. Learn at the very least some SQL...but I suggest that you learn as much as your stomach can handle. I heard someone say that SQL is like the assembly language of the database. The number one thing that slows an application to a halt is piss poor database design and poor queries. Once you have this knowledge - stuff it away in the back of your mind and take a look at a good ORM. NHybernate is probably best at the moment but is more complex that the basic learner needs. For that reason I currently suggest getting LINQ to SQL up and running as it is SUPER EASY to work with. Then look at Entity Framework (although I still think it sucks...and you should wait till EF 2.0...ERRRRR...now 4.0 released with .net 4.0). Then NHybernate.
Now is the time to start to understand the infrastructure that is required by web development. You may bump your head against this as you learn some of the web programming stuff. But you need to understand the basics of DNS, IIS, load balancers, sticky routing, round robin, clustering, fault tolerance, server hardware setup, web farms, cache farms (MemCached Win32, Velocity), SMTP, MSMQ, database mail queuing, etc. Many people may say you don't need this. That there will be some knowledgeable network admin to help you out here. However they generally know things that impact them...not you. The more you know here the more valuable you will be to the company that hires you.
Now you can get into the details of best practices and design patterns. Learn about the basics such as repository pattern, factory pattern, facade pattern, model view presenter pattern, model view controller pattern, observer pattern, and various other things. Follow Martin Fowler and others for suggestions here. Take a look at concepts such as inversion of control, dependency injection, SOLID principle, DRY, FIT, test driven design, and domain driven design, etc. Learn as much as you can here before moving to the next step.
NOW you can think about frameworks! Start by creating a basic application with ASP Classic (comes with IIS for free!). This will give you a flavor of a no frills web development environment. Take a look at ASP.NET web forms (briefly) to see how MS attempted to make things easier by hiding all the complex stuff (which you now know how to manage on your own from your readings of the above materials!!!). Now you no longer need ASP.NET Web Forms. Move immediately to ASP.NET MVC. The MVC framwork gives you all the power you need to create a good easily manageable web application. If you build something really big no framework for pure web development may be able to deal with what you need. However MVC is way more extensible for such UBER custom scenarios.
Now that you have made it through the journey to ASP.NET MVC you can take a look at things such as Microsofts Enterprise Application Blocks (such as they use at MySpace). Take a look at Elmah error logging (a must have). Look at how to build a custom SiteMapProvider for your MVC site. If you need to get into searching stuff understand Lucene.NET.
And if you made it this far...you are ready to figure out the rest on your own as it comes up! Have fun. There is a lot of room in this space for a person with some understanding of all of the above concepts.
You'll be using SOME sort of framework. The question is, what level do you want to learn at?
You'll probably not care to learn about asynchronous I/O and mutlithreaded vs. select/poll styles of web servers.
So then, your language of choice is going to provide a layer atop this, the languages preferred "web interface" API. For Java it's Servlets, the lowest level you'd typically code at for server side web applications.
You should find what this "lower level" layer is in your language and learn the API at least. You should know basic HTTP like status codes, cookies, redirects, POST vs GET, URL encoding, and possibly what some of the more important headers do.
You'll then come to appreciate what these higher level frameworks bring to the table, and be better able to evaluate what is the appropriate level of abstraction for your needs/project.
Web development requires a certain degree of organization, since it relies so much on separation of concerns. The browser, for example, is designed to display data and interact with the user. It is not designed to lookup data from a database, or perform analysis. Consequently, a web development framework can help provide services that are needed to make the browser experience a practical one.
The nice thing about employing a platform is that it will provide core components essential to the making of any web application that you won't (and shouldn't) have to think about, such as user membership, for example. Many of the design decisions and deep thinking about how to implement these services has already been done for you, freeing you to focus on what you actually want you application to do.
Of the available frameworks, I find that frameworks that implement the MVC (model-view-controller) pattern are very practical. They clearly organize different functions of web development, while giving you full control over the markup presented to the browser.
All that said, you will need some fundamental skills to fully realize web development, such as HTML, CSS, and a core programming language for the actual underlying program, whether you use a platform or not.
I don't think I agree with the Andrew. I don't think learning C is a pre requisite for web development. In fact, learning something like Javascript, Action-script or PHP is often easier due in large part to the vast numbers of sites and tutorials available, and are enough to expose you to the fundamentals of pretty much every programing language. Variable, Conditions, Loops and OOP. I just think learning C# introduces a lot of learning that isn't really relevant to web development such as pointers and memory management.
As for wether you should learn a framework first? Definitely not. Never ever. You need to be able to stand on your own two feet first and be comfortable with HTML/CSS, Server Side Scripting (PHP/ASP/Python/Ruby whatever) and love it or loathe it, but you're going to have to have a decent understanding of Flash and Action-script.
The order in which you learn these is entirely up to you. But my learning plan would go like this...
Start with HTML. It takes about half an hour to get the basics (it's made up of tags with attributes, end of lesson 1) and it's good to get it out of the way first.
Then start leaning CSS. You'll get the basics again, very quickly. But CSS is a minefield so expect to spend the rest of your life figuring it out.
Next up Action-script. Most people wouldn't agree with me, but bear with me. HTML and CSS aren't programming languages. Action-script is. And learning a programing language for the first time is difficult and tedious. The advantage Action-script has over most other languages is that the results are very visual. It's enjoyable to work with and you can sit back and take pride in your accomplishments at regular intervals. This isn't possible with server-side scripting languages or Javascript and there's a whole host of stuff you need to learn to get server side scripting up and running. You can't build space invaders in with PHP for example.
I've changed my thinking here. I would encourage beginners to ignore ActionScript and focus on Javascript. I still believe that being able to see stuff on screen quickly is a good motivator, but I would encourage people to look at canvas tag tutorials and frameworks. Javascript has come a long way since 2009, and is now the lingua franca of programming, so it's incredibly useful. My initial point about HTML and CSS not being programming languages still stands.
Then, you can start with your server side language. At the same time, you're going to have to figure out the database stuff. I recommend PHP and MySQL because it's free.
Again, I've changed my thinking here. I would encourage beginners to use Javascript on the backend (Node.js), and split their database learning between relational databases and noSql solutions such as Mongo.
Then.... learn your framework. Or better yet, roll your own. That's what I've been doing and it's supercharged my learning.
If you're getting into web development, You HAVE to know how those building blocks work. You don't have to be an expert in all the areas, but you should try to become an expert in at least one of them. If you start learning a framework before you get the fundamentals you'll be in a sticky middle ground where you don't understand why things don't work which will infuriate you, and anyone who has to work with you.
you should learn how to use framework because it would be helpfull for u in the future also it is easier to learn.
MVC will help you a lot .. trust me ... i was developing web project not using mvc and it is like mess ... (in the past there are no well know mvc and i never heard about it)
Short version: yes, and then some.
FWIW : This more generic answer may be of use to someone out there.
What: Frameworks take out tedium of using boiler-plate code again and again. They hide complexity and design issues under wizards and conventions. They also use special libraries, design patterns etc. in ways that are far from obvious to a beginner.
So using a framework is good for getting things done without knowing exactly how - like using an ATM without knowing the internals. You just add your code bits in certain places and things 'just work'.
HTML > CSS > Ruby > SQL > Rails/Javascript framework > Libraries would make for a good learning track. Rest you learn as you go along by being curious, hanging out on forums or as extended learning as need arises.
HOW: The problem starts the minute you step outside simple text-book examples (i.e. when you try to get it to do something even a bit different).
Decoding cryptic error messages when it seems like you've done everything right but things still don't work. Searching on error strings in forums may help out. Or just re-starting from scratch.
Reading up articles and books, videos, trial-and-error, hard-work, search-engines, stackoverflow/forums, local gurus, design articles, using libraries, source-code browsing are a good way to climb the learning curve gently and on a requirement basis.
Working-against-the-framework is the number one problem for beginners. Understanding what the framework expects is key to avoiding white-hair in this phase. Having enough insight to manually do what the framework automates may help reduce this second-guessing effort.
WHY: For more advanced debugging/design, it's good to know what the framework is doing under the hood esp. when things don't work as you planned. Initially you can take the help of local-gurus or forum gurus who've already done the hard work. Later as you go deeper you can take on more of that role. For example there's a "rebuilding rails" book which looks under the hood of Ruby on Rails.
Note: Some of the tips are oriented towards Ruby/Rails but you can easily substitute your favourite language/framework instead.
If you were going to start building web sites as a consulting business on the side -- keeping your day job -- and you also had a toddler and a wife, what frameworks/tools would you pick to save you typing?
Any language.
I'm looking for a productivity superstar stack that won't tie my hands too much when I have to update the site 6 months later, or "evolve" the data model once in production.
It needs to allow me to say "yes" to the client: community features, CMS, security, moderation, AJAX, ...
I would suggest Django. Super simple to get something up and running really quick. You are using Python which has a large library to go with it. For me Ruby on Rails would be a close second.
I'd probably look at DotNetNuke. Its easy to set up (a lot of hosts will do it for you) and easy to use and put together a custom site that business's will be able to maintain in the future.
Its fairly easy to create custom modules that are specific to a business and hundreds of modules for sale (or free) that can be integrated into DNN for special uses.
Take a look at Microsoft's Sharepoint server if you'd like a pre-made framework with many options for plugging in your own code. Sharepoint is kind of a world unto itself but it is a very powerful environment.
Update: I'm surprised to have been voted down on this one. Keep in mind that the questioner specifically requested frameworks that included a CMS. Sharepoint meets this criteria - unlike straight .NET or other web development frameworks.
If you are going to vote the entry down, I think you owe it to the person who asked the question to explain why you don't think he should not even explore it as an option. You could be right - collective wisdom is what voting on SO is all about. But without an explanation, we don't know why you think you are right.
My answers are going to revolve around the .NET stack.
Use Master pages and CSS templates. This makes it so much easier to pop in a new look and feel for your customer.
For sure I'd include the Dynamic Data framework in the .NET world.
Hosting might become an issue for your customer. Questions around managing email addresses, procedures on how to quickly update the website to include the new contact phone number (different for each customer, I'd assume) Consider getting a reseller account on your favorite webhost, and dole out webhosting accounts as appropriate. There are lots of issues around this point. It may turn out to be a nice source of recurring revenue.
Build yourself a few patterns including a database wrapper which would handle all your data calls (i.e. a dll which wraps all your data calls, sets up your ADO.NET objects, runs your sproc calls, and picks up the connstring from app.config or something similar.)
This goes a long way to maintainability as well.
I would recomend going with anything MVC in a language you can undertand! Theres a couple of CMS's in python, php and ruby using that design and well... that allows you to be ready for combat for Ajax and expanding anything very fast.
This is definitely not a question that can be answered.
I prefer asp.net webforms because I think it allows for extremely rapid web app development, but I am sure you will receive recommendations for:
asp.net mvc
Ruby on Rails
PHP and some framework
Python and some framework such as Django
I believe PHP has the most pre-built apps that you can use, though asp.net also has the things you are looking for.
All of these platforms and frameworks can do what you want.
Choose between Rails and Django. They both have different strengths. I like Rails better in general, but Django's admin interface can save you a lot of time when you need it.
There's another factor to take into consideration here: what are you the most familiar with? I believe that some studies have found upwards of a 30% loss of productivity when trying to learn a new language/framework.
Sometimes, there's nothing wrong with just sticking to what you know. But if you're interested in what languages/frameworks to learn, I'll refer you to the other posts because the above was the only thing I really have to add.
I recommend looking into Grails. It uses Groovy which is similiar to Java (so if you know this already you're good to go). Groovy runs on the JVM so you can still use all the great libraries already available for Java. Yet, since it's a dynamic language with a lot of the similar bells and whistles like Ruby you can use closures and that kind of neat stuff when you need/want to. And you're not slowed down by Java's traditonal slow compile-deploy-test development cycle.
Grails is already setup with Hibernate and Spring. You can create CRUD application in practically no-time (pretty much like Rails applications), and at the same time drill down and be able to control every little details since it's built on such proven and well-supported technologies. In addition there's literally hundreds of plugins available that helps you easily set up things like mailing lists, security, AJAX components and so on.
Otherwise, if you want to set up a community site and don't want to code a single line you could always check out ning.com.