caching-strategies-knowledge
Caching Strategies Knowledge Base
Quick reference for caching patterns, invalidation strategies, and Redis implementation guidelines. Focuses on caching theory and Redis patterns — for Cache-Aside code generation, see create-cache-aside.
Caching Strategies
| Strategy | How It Works | Consistency | Performance | Use Case |
|---|---|---|---|---|
| Cache-Aside | App reads cache first, fetches from DB on miss, writes to cache | Eventual | Read-heavy | General purpose, most common |
| Read-Through | Cache itself fetches from DB on miss | Eventual | Read-heavy | Transparent caching layer |
| Write-Through | App writes to cache and DB synchronously | Strong | Write-heavy (slower writes) | Consistency-critical data |
| Write-Behind | App writes to cache, cache writes to DB asynchronously | Eventual | Write-heavy (fast writes) | High write throughput |
| Write-Around | App writes directly to DB, cache populated on read | Eventual | Infrequent-read data | Write-once, read-later |
Strategy Flow Diagrams
Cache-Aside (Lazy Loading):
Read: App → Cache (hit?) → yes → return
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