Caching strategies

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Caching Strategies Deep Dive

Overview

HTTP caching reduces bandwidth and latency.

Core Concepts

Cache-Control header values: - max-age=300: cache 5 minutes - no-cache: revalidate always - no-store: never cache - private/public: for CDN

Code Examples

// OkHttp automatic caching
val httpClient = OkHttpClient.Builder()
    .cache(Cache(cacheDir, 10L * 1024 * 1024))  // 10MB
    .build()

Senior-Level Insights

• Respect server Cache-Control headers
• Use ETags for validation
• Offline fallback: serve stale cache on error