priya

No. it is not possible to configure the cache size for MMAPv1 because MMAPv1 does not allow configuring the cache size. In MongoDB, MMAPv1 is a storage engine that uses memory-mapped files for data storage. As of my last knowledge update in January 2022, MMAPv1 does not have a specific cache size configuration like the … Read more

A database profiler is used to collect data about MongoDB write operations, cursors, database commands on a running mongod instance. You can enable profiling on a per-database or per-instance basis. The database profiler writes all the data it collects to the system. profile collection, which is a capped collection. In MongoDB, the profiler is a … Read more

MMAPv1 and WiredTiger are two storage engine used by MongoDB. As of my last knowledge update in January 2022, MongoDB supports multiple storage engines, but the default storage engine has changed over the course of its versions. As of MongoDB 4.0, the WiredTiger storage engine became the default. WiredTiger is known for its performance, scalability, … Read more

A storage engine is the part of a database that is used to manage how data is stored on disk. For example: one storage engine might offer better performance for read-heavy workloads, and another might support a higher-throughput for write operations. In MongoDB, a storage engine is a crucial component responsible for managing the storage … Read more

MongoDB doesn’t follow file system fragmentation and pre allocates data files to reserve space while setting up the server. That’s why MongoDB data files are large in size. MongoDB data files can be large for several reasons: Document-oriented Storage: MongoDB is a NoSQL database that stores data in a flexible, JSON-like format known as BSON … Read more