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Caching Strategies for High-Performance Systems

February 15, 2026Trịnh Minh Nhật

Master caching strategies including cache-aside, write-through, and write-behind patterns to dramatically improve system performance.

Why Caching Matters

Caching is one of the most effective techniques for improving system performance by storing frequently accessed data closer to where it's needed.

Common Caching Patterns

Cache-Aside (Lazy Loading)

The application code manages the cache — on a cache miss, load from the database and populate the cache.

Write-Through

Every write to the cache is synchronously written to the database.

Write-Behind (Write-Back)

Writes go to the cache first, then asynchronously flush to the database.