Regex on OpenResty Official Bloghttps://blog.openresty.com/en/tags/regex/Recent content in Regex on OpenResty Official BlogHugoenThu, 20 Aug 2026 10:57:00 +0700Erlang High CPU Usage: PCRE Regex Bottleneck Traced with Flame Graphshttps://blog.openresty.com/en/erlang-high-cpu/Mon, 01 Apr 2024 00:00:00 +0000https://blog.openresty.com/en/erlang-high-cpu/<ul> <li>Observing 200%+ CPU in an Erlang Process</li> <li>Profiling Erlang CPU Usage with OpenResty XRay</li> <li>C-Level Analysis: erts_pcre_exec and PCRE Backtracking</li> <li>Why PCRE Regex Backtracking Is Expensive in the BEAM VM</li> <li>Automatic Monitoring and Reports</li> <li>FAQ: Erlang High CPU Usage</li> <li>What is OpenResty XRay</li> </ul>Golang High CPU Usage: Regex Compilation Burned 36.8% of CPU Timehttps://blog.openresty.com/en/go-high-cpu/Wed, 23 Aug 2023 00:00:00 +0000https://blog.openresty.com/en/go-high-cpu/<ul> <li>Observing High CPU Usage in a Go Process</li> <li>Profiling Go CPU Usage with OpenResty XRay</li> <li>Automatic Monitoring and Reports</li> <li>What is OpenResty XRay</li> </ul>Perl High CPU Usage: 100% CPU Traced to a Regex Hotspot with Flame Graphshttps://blog.openresty.com/en/perl-high-cpu/Fri, 04 Aug 2023 00:00:00 +0000https://blog.openresty.com/en/perl-high-cpu/<ul> <li>Observing 100% CPU Usage in a Perl Process</li> <li>Profiling Perl CPU Usage with OpenResty XRay</li> <li>Automatic Monitoring and Reports</li> <li>What is OpenResty XRay</li> </ul>