Why does golang have high concurrency?

High Concurrencyis one of the factors that must be considered in the design of Internet distributed system architecture. It usually refers to ensuring that the system can simultaneously Process many requests in parallel.

Video Course Recommendation →:"Concurrency Solution for Tens of Millions of Data (Theory and Practice)"

Why go can achieve high concurrency

goroutine is the core of Go's parallel design.

In the final analysis, goroutine is actually a coroutine, but it is smaller than a thread. Dozens of goroutines may be reflected in five or six threads at the bottom. The Go language helps you implement these goroutines internally. memory sharing between.

Executing goroutine requires very little stack memory (about 4~5KB), and of course it will scale according to the corresponding data.

Because of this, thousands of concurrent tasks can be run at the same time. Goroutine is easier to use, more efficient, and lighter than thread.

Some high-concurrency processing solutions basically use coroutines. Openresty also uses the coroutines of the Lua language to achieve high concurrency processing capabilities. PHP's high-performance framework Swoole is also currently using PHP's coroutines.

Coroutines are lighter and occupy less memory, which is the prerequisite for high concurrency.

Expand knowledge:

GO language is used more and more widely in the field of WEB development. The "2019 Software" released by Hired According to the State of Engineers report, candidates with Go experience are by far the most attractive.

【Related recommendations:Go video tutorial】

The above is the detailed content of Why does golang have high concurrency?. For more information, please follow other related articles on the PHP Chinese website!