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Performance

Everything on CoreConcept tagged with Performance. Explore related tags below.

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System Design8Databases4SQL3PostgreSQL2Query Optimization1Scaling1Load Balancing2Caching2

Courses

Intermediate10 hours
Advanced React Patterns

Composition, custom hooks, state management, and performance optimization for production apps.

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Intermediate10 hours
Caching

From fundamentals to production — caching strategies, eviction policies, invalidation, Redis, CDN caching, and multi-level architectures with hands-on patterns throughout.

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Articles

DatabasesSQLPerformance
Database Indexing Explained: B-Trees, Composite Indexes, and Query Optimization

A query that takes 4 seconds without an index takes 0.2ms with one. That's a 20,000x improvement from a single line of SQL. Indexes are the most impactful perfo…

Jul 4, 202614 min read
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ScalingSystem DesignLoad Balancing
Horizontal vs Vertical Scaling

Scaling is how a system handles more users, data, or traffic. Vertical scaling (scale up) means giving your existing server more resources — bigger CPU, more RA…

Jul 4, 20269 min read
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CachingRedisCDN
Caching Strategies: Redis, CDN, and Multi-Level Caches

Caching is the fastest way to scale a system without changing your database or adding servers. Done right, it cuts database load by 90%, drops response times fr…

Jul 4, 202614 min read
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Rate LimitingAPIPerformance
Rate Limiting: Token Bucket vs Sliding Window

Every public API needs rate limiting — to prevent abuse, protect downstream services, and ensure fair usage across tenants. Without it, one aggressive client ca…

Jul 4, 20269 min read
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