Category
message queue
3 articles across 2 sub-topics
System Design Message Queues and Event-Driven Architecture: Building Reliable Asynchronous Systems
TLDR: Message queues and event-driven architecture let services communicate asynchronously, absorb bursty traffic, and isolate failures. The core design challenge is not adding a queue — it is defining delivery semantics, retry behavior, and idempote...
How Kafka Works: The Log That Never Forgets
TLDR: Kafka is a distributed event store. Unlike a traditional queue (RabbitMQ) where messages disappear after reading, Kafka stores them in a persistent Log. This allows multiple consumers to read the same data at their own pace, replay history, and...
Dead Letter Queue Pattern: Isolating Poison Messages and Recovering Safely
TLDR: A dead letter queue protects throughput by moving repeatedly failing messages out of the hot path. It only works if retries are bounded, triage has an owner, and replay is a deliberate workflow instead of a panic button. TLDR: The main SRE ques...