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Databases & SQL vocabulary · NoSQL Databases

In-memory database

Meaning in databases & SQL, with examples

nounAdvanced term

In databases & SQL, in-memory database means: A database that keeps its data mainly in RAM rather than on disk, so reads and writes are extremely fast.

In Turkish: bellek içi veritabanı, in-memory veritabanı

How it is used

Redis is the best-known example; SAP HANA and in-memory options in SQL Server and Oracle also exist. Because RAM is lost on restart, such systems offer persistence options such as snapshots or append-only logs. They are used for caching, leaderboards, queues and real-time analytics.

Example sentences

  1. The game stores its live leaderboard in an in-memory database.

  2. Make sure persistence is on, or the in-memory database will lose everything on restart.

Common collocations

  • in-memory database
  • in-memory store
  • persistence options
  • in-memory cache
  • cacheA fast storage layer that keeps copies of frequently used data or query results so that they can be returned without asking the database again.
  • key-value storeThe simplest kind of NoSQL database, which saves each value under a unique key and finds it again very quickly by that key.
  • NoSQLA broad group of databases that do not use the classic table-and-SQL model, storing data as documents, key-value pairs, wide columns or graphs instead.
  • databaseAn organized collection of data stored on a computer so that programs and people can quickly find, add, change and remove information.

This word in other fields

The same English word can have a different meaning in another field:

More terms: NoSQL Databases

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