L4 vs L7 Load Balancing: Where the Balancer Looks
L4 vs L7 load balancing compared: the layer 4 load balancer's connection-level speed, the layer 7 load balancer's content aware routing, a decision table, and why…
Category
Networking
Load balancing, proxies, CDNs, gateways, and real-time protocols in system design.
8 articles
Long Polling vs Server-Sent Events: Choosing a Push Strategy
Long polling vs SSE compared: how server sent events work, where websockets fit, sse vs polling costs, and…
WebSockets in System Design: When You Need a Persistent Connection
What are websockets: the websocket vs http comparison, the websocket connection lifecycle in six steps, and scaling websocket…
Rate Limiting in System Design: Algorithms and Distributed Enforcement
The rate limiting algorithms that matter (token bucket, leaky bucket, sliding window) how distributed enforcement works across a…
API Gateway in System Design: The Front Door of Microservices
What an API gateway does (routing, authentication, rate limits, transformation) how it differs from a reverse proxy and…
How a CDN Works: Edge Caching, TTLs, and Cache Hit Ratio
How a CDN serves content from edge servers near users; cache hits, origin fetches, TTLs, cache hit ratio,…
Reverse Proxy Explained: The Server in Front of Your Servers
What a reverse proxy is, what it does (TLS termination, routing, security) how it differs from a forward…
Load Balancing in System Design: Types, Algorithms, and Health Checks
What a load balancer does, how L4 and L7 balancing differ, which algorithm to pick (round robin, least…