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What book would you recommend on the distributed computing concepts/database internals used with Cassandra?
A list of concepts and defintions are listed at this Cassandra glossary
Thanks!
Since Cassandra is a mix between Amazon Dynamo and Google BigTable I suggest you go ahead and read the research papers about these systems:
Dynamo: Amazon’s Highly Available Key-value Store
Bigtable: A Distributed Storage System for Structured Data
Read the Dynamo paper first. Concepts like Quorum, Read Repair, Eventual Consistency, etc. are explained very well there. After that read the Big Table paper. If you don't understand some of the terms used in these papers go ahead an google for them.
Check out the nosql summer reading list for a bunch of good papers on nosql concepts. http://nosqlsummer.org/papers
Although it doesn't delve much into the concepts, note that there is an O'Reilly book dedicated to Cassandra. It's OK, but not up to the usual O'Reilly standard in some places. The explanation of the detailed architecture is rather chaotic and hard to follow.
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Need to know about the best Managed File Transfer tools available (Open source or licensed) in market considering all the major constraints. Most importantly it should be used for enterprise integration with high availability. I have worked with some MFT tools but each has its own advantages and disadvantages.
I'm sure you've done the Google research on MFT solutions, so I will assume you're looking for personal opinions to validate the direction you're already headed.
I've evaluated Linoma, IpSwitch, Townsend, GlobalScape, Liaison, and Axway. I've got a comparison table somewhere that I put together for our analysis that outlined what I needed in a solution and found that Linoma best fit the bill.
I've now used Linoma's GoAnywhere MFT solution for a few years and am still very pleased with it. The company keeps up with the changing technologies, it has very powerful scripting capabilities yet keeps it simple to manage and administer. Key management, scheduling, alerts, logging, role management, HA integration, data manipulation, multi-platform, mobile app, and more are some of the many functions. But one of the best things about Linoma is their dedicated support team. They are the best I've worked with.
Here's a link to their information: http://www.goanywheremft.com/products/director
Good luck in your search.
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I would like to learn how to properly design MongoDB documents. I know about MongoDB manual with special section about document design. Where can I find some practical examples of documents for social networks, cms sites, logging applications? Code that I can look into and learn from.
Thanks for your time and have a nice day!
Please check this out if you really want to see a detailed approach from mongodb's creators; this is really good: http://docs.mongodb.org/ecosystem/use-cases/ .
MongoDB has some great talks with examples. I would particularly concentrate on the schema design talks.
I bought a book on Amazon titeled MongoDB Applied Design Patterns from Rick Copeland. It is a "short" book with practical use cases on how to use MongoDB. It describes practically how to use MongoDB in CMS, social networking, online gaming, ecommerce, etc... Exactly what I was looking for. :)
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what is the best documented and stable version of nosql technology to use with python or maybe with another programming languages ?
Are there any good tutorials ?
Many thanks.
The two most popular are MongoDB and Redis.
If you have a specialized need there are other choices that are better. But in general those two is what most people want.
There is no unique "NoSQL" solution which fits all requirements. You need to provide more information on what you want to achieve so we can guide into a specific direction.
Nonetheless here are some good databases (which all target a different market actually):
MongoDB, CouchDB, Redis, Cassandra, Riak
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I'm studying operating systems with this book and following some exercise guides from the university: scheduling, synchronization, memory, file system, I/O...
It's an interesting topic, but I've to take the exam in a month so I've a short amount of time to deeply learn it. I tried reading a linux scheduler for example, but I couldn't understand it very well because of my limited C knowledge.
I'm looking for comprehensive material(interactive at best), I've found this about semaphores(synchronization) that seems really nice and I'm about to start looking at it.
My suggestion is, in addition to search for some interactive learning solutions, to read some chapters of Modern Operating Systems book by A. S. Tanenbaum
I studied it for Operating Systems and Architecture course (# university - Computer Science, 2nd year) and it's very good as the author makes concepts simple to understand!
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I have been tasked with researching and implementing data warehousing for our ERP system (it's IFS if anyone happen to have prior experience). There is 137GB of data over more than 5000 tables.
Does anyone have any experience of data warehousing a large ERP system and can you recommend any tools or provide any advice on the matter. It's not something i've ever dealt with before.
That's a huge topic. We went with SQL-Server and Analysis Services for our warehouse (for Oracle eBiz ERP) - great tools and platform IMHO.
You really need to figure out how you're going to use the DW and based on that figure out what gives you the features and tools that you need. The ERP has little relevence because ultimately you're going to be transforming the data from the ERP into whatever you need in the DW and that's where the real work comes in.