10 Production-Ready Async Patterns with Interactive Diagrams
What async actually is, why it exists, and how the event loop, coroutines, and await work — read this before the patterns.
Cap concurrent requests. Never overwhelm a server.
Producer/consumer with backpressure. Decouple job arrival from processing.
Handle 10K+ concurrent requests on one worker.
Never block the loop. Threads & processes.
Handle failures gracefully. Bounds & exponential backoff.
Time-based rate limiting. Smooth throughput control.
Reuse connections. Lifecycle management.
Stop calling failing services. Automatic recovery.
Accumulate items, process as batch. Efficiency.
Proper task cancellation and resource cleanup.
Understand queue.Queue vs asyncio.Queue fundamentally.