Using XDP and eBPF, we can directly read and write the Ethernet frames from the network card and parse them ourselves, gaining complete control over the data and significantly improving performance, basically bypassing all the Linux network layers. And all this can be done directly from a normal Go application run by the user… How beautiful is it?
First version of HTTP came out in 1997, do you really think that most of the traffic on the web today still uses it? Over time there has been a great evolution of the protocol, with 2 new versions released that are not compatible with the original standard, turning it into a totally different protocol and no longer text-based.
However, most developers don’t even know what we’re talking about, what about a deep dive?
In recent years, more and more programming languages are introducing green threads internally, a type of concurrency that is built by abstracting native OS threads using the language’s runtime.
They may have various names, but the concept is always almost the same: coroutines, virtual threads (Java 1.19+), goroutines (Go), fibers (PHP), etc.
But… Why? As we will see, they are great for I/O bound tasks, and we will analyze the logic behind Go’s implementation, which is one of the most mature.