Maximize Performance: Asynchronous PHP Explained!
summary
E‑commerce checkout waits of up to 20 seconds, correlated with cart size, get cut by moving nonessential work off the request path: order tracking, marketing snippets, duplicate confirmation emails and newsletter API calls become queued events processed later. Stack uses RabbitMQ for events, ReactPHP with bunnyphp and react/http consumers that pull JSON orders, fire concurrent HTTP posts via promises, then ack. Result: removed the item‑count delay, saved 1–2s from SMTP and eliminated duplicate emails; caveats: queue HA, blocking calls and supervision need care.
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