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 […]
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, and […]
In this blog post, we will learn what MongoDB chained replication is, why you might choose to disable it, and the steps you need to take to do so. What is chain replication? Chain Replication in MongoDB, as the name suggests, means that a secondary member is able to replicate from another secondary member instead […]
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 […]
The post MongoDB Explain – Using PMM-QAN for MongoDB Query Analytics appeared first on Percona Database Performance Blog.
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 particular […]
In this blog post, we will look at MongoDB replica set tag sets, which enable you to use customized write concern and read preferences for replica set members. This blog post will cover most of the questions that come to mind before using tag sets in a production environment. What scenarios are these helpful for? […]
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 […]