For developers
Cache is King
Reason about cache placement, invalidation, consistency, and the failure modes behind apparently simple speedups.
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Your learning path
16 of 58 topics have lessons available today. Choose any available lesson.
- 01
Caching Fundamentals & Trade-offs
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- 02
When Caching Makes Things Worse
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- 03
Browser & Client-Side Caching
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- 04
HTTP Cache Headers
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- 05
Service Workers & Advanced Patterns
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- 06
CDN & Edge Caching
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- 07
Application-Level Caching
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- 08
In-Memory Caching
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- 09
LRU and Eviction Policies
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- 10
Distributed Cache Systems
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- 11
Database Query Caching
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- 12
Query Result Caching
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- 13
Cache Invalidation & Consistency
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- 14
Advanced Cache Patterns & Problems
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- 15
Cache Stampede Prevention
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- 16
Distributed Cache Consistency
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Topics without lessons yet
These are part of the outline. Lessons are not available for them yet.
- The Cost-Benefit Analysis
- Performance vs. Consistency
- Memory and Storage Costs
- Debugging Complexity
- Cache Stampede Scenarios
- Over-Caching Low-Value Data
- Cache Synchronization Overhead
- Cache-Control Directives
- ETags and Validation
- Vary Header Strategy
- Cache-First Strategies
- Network-First with Fallback
- BFCache Optimization
- Edge Cache Configuration
- Cache Key Design
- Geographic Distribution
- Cache Invalidation & Purging
- Purge vs. Soft Purge
- Surrogate Keys and Tagging
- Cache Warming Strategies
- Result Memoization
- Redis Architecture
- Memcached Simplicity
- Cache Aside vs. Write-Through
- Cache Key Generation
- Partial Result Caching
- Native Database Caches
- MySQL Query Cache
- PostgreSQL Shared Buffers
- Time-Based Invalidation
- Fixed vs. Sliding TTL
- Stale-While-Revalidate
- Event-Driven Invalidation
- Database Triggers and Webhooks
- Message Queue Integration
- Versioned Keys Strategy
- Probabilistic Early Expiration
- Request Coalescing
- Lock-Based Refresh
- Eventual Consistency Patterns
- Cache Replication Strategies
- Invalidation Broadcast