Caching
Day 08 · Azure · Data
Caching
Put Azure Cache for Redis in front of your database. Repeat reads return from memory in microseconds; only misses fall through to Azure SQL.
Hits return from memoryA Redis hit is served from RAM — often 10–100× faster than querying Azure SQL.
Misses backfill the cacheOn a miss, read from Azure SQL, store the result in Redis, then serve it. Later reads become hits.
It protects the databaseFewer queries reach Azure SQL, so it stays responsive under load — and you can scale the cache on its own.