Author - Aayushi Mangal

MongoDB Replica Set Scenarios and Internals – Part II (Elections)

mongodb node election to primary

In this blog post, we will walk through the internals of the election process in MongoDB®, following on from a previous post on the internals of the replica set. You can read Part 1 here.
For this post, I am refer to the same configurations we discussed before.
Elections: As the term suggests, in MongoDB there is a […]

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MongoDB Engines: MMAPV1 Vs WiredTiger

review of MongoDB storaage MMAPv1 and WiredTiger

In this post, we’ll take a look at the differences between the MMAP and WiredTiger engines in MongoDB®. I’ve been asked this question by customers many times, and this blog is for you! We’ll tell you about the key features of these engines, then you can choose the right engine based on your requirement.
In […]

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MongoDB Replica set Scenarios and Internals – Part 1

MongoDB replica sets replication internals r

The MongoDB® replica set is a group of nodes with one set as the primary node, and all other nodes set as secondary nodes. Only the primary node accepts “write” operations, while other nodes can only serve “read” operations according to the read preferences defined. In this blog post, we’ll focus on some MongoDB replica set scenarios, […]

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MongoDB Explain – Using PMM-QAN for MongoDB Query Analytics

MongoDB 4.0 Features Webinar

In this blog post, we will walk through PMM-Query Analytics for MongoDB. We will see how to analyze MongoDB query performance; review the initial parameters that we need to check; and find out how to compare MongoDB query performance with and without indexes with the help of EXPLAIN plan.
The Percona Monitoring and Management QAN (PMM-QAN) dashboard […]

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Zone Based Sharding in MongoDB

MongoDB shard zones

In this blog post, we will discuss about how to use zone based sharding to deploy a sharded MongoDB cluster in a customized manner so that the queries and data will be redirected per geographical groupings. This feature of MongoDB is a part of its Data Center Awareness, that allows queries to be routed to […]

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MongoDB Sharding: Are Chunks Balanced (Part 1)?

MongoDB Sharding

In this blog post, we will look at how chunks split and migrate in MongoDB sharding.
Sometimes even using good shard keys can create imbalanced chunks. Below, we’ll look at how jumbo chunks affect MongoDB sharding, how they are created and why they need to split into smaller chunks. We will also walk through the introduction […]

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MongoDB 3.6 Security Improvements

Running MongoDB

In this blog post, we’ll look at MongoDB 3.6 security improvements.
As we’ve already talked about in this series, MongoDB 3.6 has a number of new features in it. But we have talked less about the new security enhancements in this release. The MongoDB 3.6 security features are particularly exciting. Some of these are just […]

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