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Redis.md

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Redis

It's an open source in-memory database used to build high performance, scalable web applications.

  • It's a NoSql database (key-value store) NoSql

  • It's a in-memory database, meaning that:

    • It's used for short-lived data (like sessions)
      • data might be lost if the server crashes (not a concern because it's used for short-lived data), so we may sacrifice durability for speed
    • data stored is small (because it's stored in memory not on disk)
    • It's really fast

  • usually used with cached data like sessions

    • sessions: have data for specified time then it expires
    • example: JWT
      • it's a token that has data about the user
      • is can be stored as a session in redis (because it's short-lived data)

  • when you have small data that you want to access