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With extensive work that we have done on MongoDB while assisting clients with custom MongoDB environments, we found a variety of potentially problematic settings during this procedure. It will great if others also learn through our experience, here on this blogging platform, about best practices for MongoDB.

General NoSQL Best Practices:

Many articles have been written to address the NoSQL determination process. Variables that impact your decision of database, manage your application’s needs with regards to read/write throughput, durability, consistency of data, latency, and so forth.

Selecting the right NoSQL database is beyond the scope of this post, but it is recommended do primary research. It will certainly pay off as there is no single arrangement that fits all scenarios. Use MongoDB for your application, this article assumes that you have done some research on it, and hunting for best practices:

Test Exhaustively

Test inside the setting of your application and against development outlines that are illustrative of your generation framework. A test domain that does not resemble your creation movement will piece you from discovering execution bottlenecks and engineering configuration imperfections. Look at your queries nearly and constantly gather metrics.

Don’t Assume What Worked For Your RDBMS Will Interpret

Whatever took a shot at your SQL database may not deal with MongoDB, in this manner, your wants ought to be common sense and agreed with the highlights of the database. For better execution, outline your records and queries as per what 10gen recommends. Comprehend that your application may be re-architected keeping in mind the end goal to relocate to a non-relational data store.

Think Consistency and Durability Needs Of Your Data.

Think about your solidness and consistency needs. We feel compelled to underscore this as much as possible. During your exploration, you will find that MongoDB offers sturdiness through replication. It is never prescribed to run an independent MongoDB for production utilize, ensure you understand why.

Comprehend What To Expect From Elastic Block Storage (EBS) Volumes

If you are an AWS EC2 client, you should realize that the execution of Amazon’s EBS can be conflicting. Gather throughput metrics over time while benchmarking your application and plot your data.

MongoDB Best Practices:

Here are the rules we take after as we work on releasing MongoDB into our stack.

Continuously Utilize Replica Sets

Replica sets give high accessibility through programmed failover. In the event that your essential hub comes up short, a secondary node will be chosen as primary and your bunch will remain functional. We won’t bolster a non-recreated MongoDB for production environments. Consider a hosted solution with MongoHQ and MongoLab if the cost of replicating Mongo is too much.

Keep Current With Versions

It would be ideal if you keep your version of MongoDB current. 10gen reveals various fixes inside each release that assistance your bunch run smoother. Version 2.0.x includes critical execution and simultaneousness enhancements, record changes, bug fixes, a compaction command, and it even makes it simpler to upsize your cluster. On the off chance that you are as yet utilizing 1.6.3 please make sure to upgrade as quickly as time permits.

Try Not To Run MongoDB On 32-Bit Systems

MongoDB has a 2.5GB data limit on 32-bit systems. Its stockpiling motor uses memory-mapped files for performance and they are attached to the accessible memory tending to. You should utilize a Large example as your base establishment with creation MongoDB on 64-bit instances.

Turn Journaling On, As A Matter Of Course

MongoDB bolsters compose ahead journaling of operations to encourage crash recovery and node durability. We strongly recommend that you Turn On Journaling of course.

Mind The Area Of Your Data Files

Check your formulas to ensure that your MongoDB data files exist in a persistent volume (example:/data/MongoDB). Utilizing vaporous drives is conceivable, yet you ought to be greatly watchful when choosing to do as such, as it will impact your cluster architecture. We recommend utilizing EBS for your MongoDB data.

You’re Working Set Should Fit In Memory

Having the capacity to keep the working set (and indexes) in memory is an important factor in overall cluster performance. On the off chance that you see the quantity of page flaw expanding, there is a high shot that you’re working set is bigger than your accessible RAM.

You have two choices when your data surpasses your available RAM: expanding the size of your MongoDB instance or sharding. We recommend expanding instance measure first.

Scale Up If Your Measurements Indicates Heavy Use

On the off chance that your occurrence demonstrates a load more than 65%, you should consider scaling up. Your load should be reliably underneath this edge threshold during normal operations. This likewise impacts recovery and vertical scaling situations. If you have to expand your instance size, AWS suggests the accompanying upgrade path: Large, Extra Large, High Memory 4XL. We have additionally watched less latency on bigger EBS volumes.

Be Cautious While Sharding

Sharded installations require a cautious understanding of your application’s data access patterns. Kindly set aside the opportunity to see how MongoDB sharding works and if you truly require it. Likewise, remember that choosing a good sharding key is imperative as it will influence your performance.

Config servers are basic to the health of your cluster. You must have 3 setup servers in a shared production environment. Never erase their data, always ensure you back them up frequently, and refer to them, in the event that you can, by name utilizing an /etc/hosts file (this will make your cluster more resilient).

Config servers are basic to the health of your cluster. You must have 3 setup servers in a shared production environment. Never erase their data, always ensure you back them up frequently, and refer to them, in the event that you can, by name utilizing an /etc/hosts file (this will make your cluster more resilient).

Utilize Mongo MMS To Graphically Screen Your Service

If you are not doing as such as of now, attempt using Mongo MMS.10gen is effectively building up this product and it is proving to be an incredible approach to visually evaluate the health of your cluster.

Keep Up With MongoDB Resources

Keep informed as things change quickly. MongoDB resources:

Documentation:http://www.mongodb.org/display/DOCS/Home

Google Group: http://groups.google.com/group/mongodb-user

Bugs: https://jira.mongodb.org

Blog:http://blog.mongodb.org/

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