What is Redis?
An in-memory data store that is extremely fast, commonly used for caching and real-time features.
Why It Matters
Redis can respond in microseconds, making it ideal for caching, sessions, and real-time leaderboards.
Real-World Example
Storing frequently accessed product data in Redis so pages load in milliseconds instead of querying the database.
“Understanding terms like Redis matters because it helps you have better conversations with developers and make smarter decisions about your software. You do not need to be technical. You just need to know enough to ask the right questions.”
Related Terms
Cache
A temporary storage that keeps copies of frequently accessed data for faster retrieval
Key-Value Store
A simple database that stores data as pairs of keys and values, like a dictionary.
Database
An organised collection of data that your application can store, retrieve, and update
Session
A way to remember information about a user while they're using your app
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Related Terms
Database
An organised collection of data that your application can store, retrieve, and update
Cache
A temporary storage that keeps copies of frequently accessed data for faster retrieval
Session
A way to remember information about a user while they're using your app
Key-Value Store
A simple database that stores data as pairs of keys and values, like a dictionary.
SQL
A language for communicating with databases, used to create, read, update, and delete data
NoSQL
Databases that store data differently from traditional tables, often as flexible documents or key-value pairs