Varnish vs Memcached Comparison

Feature Varnish Memcached
Type HTTP reverse proxy for web acceleration General-purpose distributed memory caching
Caching Focus Entire web pages (HTML, CSS, JavaScript, images) Small chunks of data (database results, API responses)
Use Case Accelerating dynamic web applications Speeding up dynamic database-driven websites
Cache Method Based on URL, HTTP headers, and cookies Key-value pairs
Features SSL termination, compression, content manipulation, request coalesing Memory-based data caching, no advanced HTTP features
Application Changes Minimal changes to application code Requires code changes for cache invalidation
Performance High-performance, scalable caching Suitable for smaller-scale caching needs

When to Choose Each

Situation Use Varnish Use Memcached
Best for Accelerating dynamic web applications, caching entire pages Caching small chunks of data from database calls or API responses
Advanced Features SSL termination, compression, content manipulation General-purpose caching without advanced HTTP features
Scale High-performance, scalable caching Smaller-scale caching needs