DZone Database Zone
What an In-Memory Database Is and How It Persists Data Efficiently
You've probably heard about in-memory databases. If not, you can check out a quick overview of what they are here!
Long story short, an in-memory database is a database that keeps the whole dataset in RAM. What does that mean? It means that each time you query a database or update data in a database, you only access the main memory. There's no disk involved in these operations — and this is good because the main memory is way faster than any disk. A good example of such a database is Memcached.
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