Lua code running inside OpenResty or Nginx servers is very common nowadays since people want both performance and flexibility out of their nonblocking web servers. Some people use Lua for very simple tasks like modifying and checking certain request headers and response bodies while other people …

Memory fragmentation is a common problem in computer systems though many clever algorithms have emerged to tackle it. Memory fragmentation wastes free memory blocks scattered in a memory region and these free blocks cannot be merged as a whole to serve future requests for large memory blocks or c…

OpenResty 和 Nginx 服务器通常会配置共享内存区，用于贮存在所有工作过程之间共享的数据。例如，Nginx 规范模块 ngx_http_limit_req 和 ngx_http_limit_conn 应用共享内存区贮存状态数据，以限度所有工作过程中的用户申请速率和用户申请的并发度。OpenResty 的 ngx_lua 模块通过 lua_shared_dict，向用户 Lua 代码提供…

OpenResty 最近公布的正式版本 1.17.8.2 修复了安全漏洞 CVE-2020-11724。这个破绽是一个 HTTP request smuggling 破绽，能够实现某种程度上的平安防护绕过。

This is Part 4 of the series “The Wonderland of Dynamic Tracing” which consists of 7 parts. I will keep updating this series to reflect the state of art of the dynamic tracing world.

This is Part 3 of the series “The Wonderland of Dynamic Tracing” which consists of 7 parts. I will keep updating this series to reflect the state of art of the dynamic tracing world.

This is the second part of the 7 part series “The Wonderland of Dynamic Tracing.” This series will consist of updates on the state of art of the dynamic tracing world.

This is the first part of the article “The Wonderland of Dynamic Tracing” which consists of 7 parts. I will keep updating this series to reflect the state of art of the dynamic tracing world.

Over the years, OpenResty’s open source community has grown bit by bit right before our eyes. Casting our memories back to 2014, before OpenResty Inc. became a full-fledged company and was instead a seedling idea, we looked back at your involvements in OpenResty. Remembering the last half-decade …

OpenResty 1.17.8.1, based on the Nginx 1.17.8 core, has been officially released. For the full announcement with a list of detailed changes, highlights, and testing, see here.Because of the miscellaneous security updates, we recommend all OpenResty users to upgrade to this version.A brief overvie…