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BlogPHP 8.4 Performance Notes from Real Production W…
Backend
#PHP#Performance#API#Linux

PHP 8.4 Performance Notes from Real Production Workloads

Miodrag GromilicMarch 22, 2026Backend

Upgrading runtime versions is often sold as a free speed boost, but production behavior depends on your workload profile.

Most gains came from reducing CPU spikes in repeated request patterns, while memory usage stayed stable.

A safe rollout strategy used canary pools and latency SLO checks.

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Miodrag Gromilić
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Miodrag Gromilić

Miodrag Gromilić is a software architect, engineering team lead and DevOps engineer with 15+ years of experience across PHP/Laravel, React/Next.js, Linux, Docker/Kubernetes and production AI integration.

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