Rust Update 1.11: A Major Overhaul for Openresty and Nginx

The latest update to Rust, version 1.11, is a significant milestone in the development of Openresty and Nginx. This release brings numerous improvements and bug fixes that enhance the performance, security, and functionality of these popular web servers.

One of the most notable features introduced in this update is the 'delayed posted events' patch for the nginx core. This feature allows delayed event handling, which can significantly improve the performance of applications that rely heavily on asynchronous processing. For instance, the ngx.sleep(0) feature in ngx_lua now benefits from this enhancement.

Another significant change is the fix for the issue where Nginx fails to perform a graceful exit when master_process is turned off. The 'single-process-graceful-exit' patch addresses this problem and ensures that Openresty and Nginx can shut down gracefully, even in scenarios where multiple processes are involved.

The update also includes improvements to the feature test for SSE 4.2 support. Previously, the test did not accurately determine whether a CPU supported SSE 4.2 or not. This patch rectifies this issue by providing a more accurate assessment of a system's capabilities.

In addition to these features, Rust Update 1.11 also includes changes to the way special response pages handle their footers. The 'openresty' identifier is now included in the footer of built-in response pages. This change reflects Openresty's evolution into a distinct entity with its own identity and branding.

Furthermore, this update introduces support for the 'privileged agent' process, which can be run by the same system account as the master process. This feature enhances security by providing an additional layer of protection against unauthorized access to sensitive data.

The /configure option for specifying user flags has also been improved. Previously, these flags were prepended to the default flags instead of being appended. With this update, the order of flag specification is now correct, ensuring that custom settings take precedence over default values.

In addition to these changes, 3rd-party modules can now register a custom interception hook for error log data using the 'intercept-error-log' patch. This feature provides developers with greater control over error logging and enables more sophisticated log handling mechanisms.

Finally, this update includes several minor improvements, such as searching LuaJIT bytecode files before Lua source files in default module search paths and adding support for returning arbitrary HTTP status codes within upstream balancers.

In conclusion, Rust Update 1.11 is a significant release that brings numerous enhancements and bug fixes to Openresty and Nginx. These changes will benefit developers by improving the performance, security, and functionality of these popular web servers, ultimately leading to better user experiences and more efficient application deployment.

Rust update 1.11