Chunk Size in MongoDB
When the first mongos connects to a set of config servers, it initializes the sharded cluster with a default chunk size of 64 megabytes. This default chunk size works well for most deployments; however, if you notice that automatic…
MongoDB: Change opLog Size
What is opLog ? Just as Transaction Log in MS SQL Server or Binary log in MySQL, all those transactions on MongoDB RS will be written into a separate file, called opLog. This opLog will have a fixed size, which…