I have a desktop ERP application used by around 100 customers at different locations.Since its cumbersome to manage deployment and installation of such environment,i am planning to move this to web platform.I came accross this concept of software as service..I intend to go for this design approach...
The challenge i face here is that all customers will have there own databases and i want to make single web application which can connect to all the databases based on some licensing mechanism...
I am not quite sure how to do this.
Feedback and suggestions on this are most welcome.
The SaaS philosophy is building in two principles. Multi tenant principles and local tenant principles. At first you store user stuff in one database, for second user created new database, for third - created new database and etc. In local tenant option you store all data of all users in one database.
At first - you need a database storage (mysql,msslg, other with) , web aplication for use in browser (buld in php, or html5, of adobe flash(OMG!).
Web application conect with database - used permission for users and etc.
at simple thats all!
And a have a question in which for you ERP store a users,passwords,documents and other?
Depending on the answer, to look for a solution.
Related
Visualization tools like tableau, looker, apache superset are not supposed to be used for multi tenant products.
For example. A product with 1000's of users would like analytics on their data. This needs to be secure so company A cannot see other company B visualizations. For this to work these tools need to understand if a user has privileges to view the data. This is usually achieved through cookies after the user has logged in
To ensure data is only accessed by authorized users these third party tools should not be used. Instead sticking to Ruby on Rails with d3js, highcharts etc is the best options. The data can be managed a lot easier through the same authentication methods as you login and so the data is secure.
Actually, Looker handles multi-tenant data situation just fine. It is quite a common use case for Looker.
You can bind attributes to users that will force the right SQL to be written to guarantee that the user only sees appropriate data.
https://docs.looker.com/reference/explore-params/access_filter
We've got lots of customers building extranets for their businesses this way.
Disclosure: I work at looker.
The complexity of multi-tenant deployments goes far beyond the setup of some filter:
Data privacy - you are one typo away from a data privacy breach with the filters. You should use the database security and privacy capabilities to isolate your tenants.
Performance - you need to scale the underlying database to handle the load of concurrent users.
Customization - your tenants might need to load and analyze their own custom data. They need custom reports, etc.
Take a look at gooddata.com and their workspaces.
Disclosure: I work at GoodData
We have a python based server that uses mongodb database. Our server programs uses RabbitMQ to exchange request/reply packets with many Android apps and perform actions accordingly. In addition to this, now we also need to create a web portal for the admin staff to let them manipulate the database, upload/download files, view data/statistics and trigger actions for android clients. So, the database is going to be common for the portal and the existing server programs.
For the web portal development, I got a recommendation for using Plone. We are comfortable in using traditional Node.js. Could anybody guide me on the use of Plone within this context. Is plone able to communicate with mongodb and existing server side programs?
Plone is a CMS designed around managing web based content and is tightly integrated for storage of its data in the ZODB, a NoSQL database. If data is very custom and isn't all about webpages and website nagivation etc, or if you have a need for the data to live in a different kind of DB then Plone probably isn't the right tool for you. This isn't to say it can't be made to do these these things but you would have to learn a lot about it's internals to make it do these things.
I plan to design a system with Dreamfactory as the user management server while a separate REST server for social feed. Dreamfactory will have its own MySQL database for storing user info while the social feed will use MongoDB.
Is this a good system design? I'm new to this as I'm using both open source platform for two different purposes; social feed and user management.
It's difficult to answer your question without knowing requirements to the system. I was going to ask you why storing users in MySQL, but all the same I can ask why using MongoDB or product XXX ;)
There is no silver bullet in programming. Tool is chosen from requirements, not vice versa.
If you do not need to relate data, do not need transactions and does not care about data consistency at all, why go why relational databases? Solutions like AeroSpike or just Redis (yes, it can be persistent too) can give you much higher read/write rate.
Well, I suggest you go write a document, containing your system description, think of load this system is going to have. May be you will decide, that storing data in CSV files is ok for you (joking ;) )
There are a ton of online CMS services out there. And a ton of (new) backend-as-a-service products too. But I can't seem to find what I am looking for.
I am building an app for a client. The app contains data about shops, products, and more. The client must be able to update this data (and not just one person: each shop manager needs to be able to log in and edit the data for their own shop). And of course the app must be able to access this data.
Client edits data online
This has to be extremely user-friendly and completely online. I don't want to sell my client something where they need to install stuff on their server. I don't want to sell them something that's accessible online but looks like phpMyAdmin.
I want a shop owner to be able to go to a webpage, log in, and then see a pretty UI where they can edit the data for their shop. The back-end needs to have a pretty front-end that's auto-generated for whatever data this particular shop owner is allowed to edit.
So there are two bits: storing data in the cloud in such a way that it can be accessed by the app (which I am building with Titanium), and allowing the client to log into the backend and edit the data in a non-tech, user-friendly way.
Here's a list of things I tried...
Backend-as-a-service
Services with a great back-end, but without easy auto-generated data editing website:
Appcelerator (Titanium) Cloud Service
Amazon EC2
Stackmob
BackBeam
WebVanta
Parse
API o Mat
ShepHertz Cloud42
Kii
Online CMS
Services that provide a nice way for clients to edit data, but no easy way for apps to connect:
CloudCMS
(and many others I'm sure)
It's insane that no-one seems to be providing the cross-breed of BaaS and online CMS. So many people are building apps for clients, and so many clients are not tech-savvy and are reluctant to get a special server and host database software they don't understand. Why does this not exist? What am I missing?
With apiOmat it's easy to create your own data-editing app for e.g. with JavaScript SDK and HTML. Or you send a feature request so that they build a module for your preferred CMS.
As you mentioned, Cloud CMS is a really good option (disclaimer: I'm one of the founders). The product provides an enterprise content management backend and an API that lets you plug in some really powerful features right into your mobile apps.
This month, we released a brand new user interface which provides much of what you're asking about. Instant forms, document libraries, search and workflow all in one place.
You can check out Cloud CMS here: http://www.cloudcms.com
I completely agree with your assessment particularly with respect to the last mile (getting the final app built). It's kind of the wild west out there and the strong technologies are still proving out.
You mentioned Titanium - that's a good choice. I also quite like the Ionic Framework (http://www.drifty.com/). It's a step in the right direction.
I know this has been asked a few times, but there seems to be no clear answer ... am searching on this for the past 3 days or more.
There seem to be 2 ways to connect to an Oracle database from an iOS App :
ODBC Client
I need to compile ODBC (which ODBC?) using gcj for ARM. I think this is the hard way, wrought with errors, but possible with quite an effort.
USING WEB SERVICE
Connect from App to webservice and from web service to Oracle DB.
Are these the 2 methods available or any other?
Few questions on the two methods:
a. Which is more secure?
b. Will my company's security department oppose to any of the above?
c. Which is more performant?
d. Which of the above does one normally use?
Webservices are the answer, you do not want people connecting directly to the database from a mobile device. A Webserver will add one extra layer of security as well as the ability to handle simultaneous request without stressing the database directly
a. Which is more secure?
Webservices as explained above
b. Will my company's security department oppose to any of the above?
Yes, security department will insist not to open the oracle port to connect directly, unless they have it already open.
c. Which is more performant?
Webservices, setting up the right cache policies in a webserver can save resources to the database.
d. Which of the above does one normally use?
Webservices, because they offer you great advantages in security and performance, not only that, webservices are reusable and can be accessed by many different platforms, think on the future you might want to serve your application later on Android devices and Webservices will save you a lot of development time.
Many of today's top applications in the market use webservices, think about it.
Google Maps is a great example of how powerful webservices are!
It's not a good idea to connect to your database directly from your app. It can be secure if you create an account that can do nothing but SELECT, but there are some other things to consider.
Why burden the app with the Oracle client?
If you have many users you have to worry about Oracle handling a huge number of simultaneous connections. With a Restful API requests are stateless.
If you decide to change your schema. You'll also have to change your app. When you place a service in between, the app is no longer dependent on the schema.
ODBC connection will require that the Oracle port is open to the Internet, which in vast majority of cases will not be allowed for security and performance reasons. Even if it were, or even if you establish a secure VPN, a direct database access requires that the connection is kept open, which can be problematic when a mobile device can go in and out of the network coverage.
HTTP is far more tolerant to unreliable networks and can be encrypted using SSL (HTTPS). The problem with HTTP is that database do not have direct support for this transport so most people develop dedicated web services.
I work on a project called SlashDB, which automatically constructs RESTful APIs out of databases. For public APIs you would install /db in so called DMZ (a network segment between two firewalls) as described in this blog post.
SlashDB can be configured to allow restricted data access to public users or you can define specific users with varying privileges to data. It is designed as stateless service, which means that you can easily set up multiple nodes behind a load balancer and reverse HTTP proxy for high availability web scale deployments.
Regardless whether you develop the web service by hand or use our product you will achieve better scalablity, performance and security for your solution than by using direct client/server approach. I would even argue that REST APIs should be used internal enterprise data integration solutions but that's a whole new topic.
I am going to repeat what everyone else said, Rest API is the way to go. Do not connect to the database directly. However, there might be a way to connect to your database which I never tried my self.
http://odbcrouter.com/iosvsweb#hn_iOS_Open_Database_Connectivity_SDK