Scaling Laravel checkouts to 10k/sec: Cache strategies, Queues, and pgvector
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High-Concurrency Bottlenecks in Laravel
In high-traffic marketplaces, classic request-per-query patterns collapse.
Optimization playbook
| Layer | Strategy | Impact |
|---|---|---|
| Queue | Async tax + webhook jobs | Lower request time |
| Cache | Redis partitioned settings | Fewer DB hits |
| DB | Pooled writes + batched commits | Reduced lock contention |
Queue dispatch sample
PHP
ProcessPaymentWebhook::dispatch($orderId)->onQueue('payments');
Small latency wins across layers compound into major throughput gains.