TL;DR How can I log the Lua execution time of each request (excluding time spent on asynchronous IO) in ngx.ctx in a non-intrusive, zero-cost way?
The Lua execution time is the sum of the following metrics:
lua_resume phases REWRITE ACCESS CONTENT BALANCER lua_pcall filters header_filter body_filter https://github.
Background HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web, complementing the widely-deployed HTTP/1.1 and HTTP/2.
Both HTTP/1.1 and HTTP/2 use TCP as their transport. HTTP/3 uses QUIC, a transport layer network protocol which uses user space congestion control over the User Datagram Protocol (UDP).
Background Kerberos is a computer network security protocol that authenticates service requests between two or more trusted hosts across an untrusted network, like the internet. It uses secret-key cryptography and a trusted third party for authenticating client-server applications and verifying users’ identities.
As known, nginx modules are static linking.
Of course, you could also use dynamic modules, but they are limited to use dynamic symbols from nginx executable.
What if I need to use static variables and functions from nginx executable in my code?
Asynchronous programming or async for short, is a concurrent programming model supported by an increasing number of programming languages. It lets you run a large number of concurrent tasks on a small number of OS threads, while preserving much of the look and feel of ordinary synchronous programming, through the async/await syntax.