What is an In-memory database?

An in-memory database is a way to store data and access it in the fastest way possible.

An in-memory database is a database where data is stored in the memory of computers, as opposed to traditional databases which use SSDs or hard drives.

In-memory databases can be Non-relational databases or Relational databases.

Best when speed and availability is key

This type of database is particularly useful when dealing with data that need to be accessed in real-time or really quickly: think of gaming platforms, real-time biding or embedded software systems. However, it comes at a price: by default, data stored in in-memory databases is not persistent and can be lost in case of crash.

Benefits of using In-memory databases

  • Low latency
  • Fast response time

Use cases for In-memory databases

  • Caching layer for persistent databases
  • Real-time applications (gaming, banking, biding)
  • Embedded software systems

Examples of In-memory databases