Answer
Async frameworks replace the synchronous model with event loops, eliminating process-per-request overhead. They enable WebSockets, microservices, real-time APIs, and long-running processes with minimal latency.
Quick Answer
Swoole and RoadRunner keep the application in memory between requests, eliminating bootstrap overhead per request. This gives 5-10x throughput improvement for framework-heavy apps. Swoole adds coroutine support for true async I/O. RoadRunner uses Go for the HTTP layer and PHP workers in pool. Trade-off: memory leaks are fatal in long-running processes, so careful lifecycle management is required.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ