What is elegant restart and stop
Restarting or stopping a web service elegantly means how to not interrupt the request being processed and reject new requests when we need to update or maintain the service. That is, when we send a restart or stop signal, the service will complete processing of all received requests before proceeding with the next operation.
Go gin's elegant restart and stop
Use system signals for elegant restart
We can listen to the system's SIGINT and SIGTERM signals and start gracefully shutting down the server when they are received.
srv := startServer() // Start the serverquit := make(chan )
(quit, , )
<-quit
("Shutdown Server ...")
if err := (()); err != nil {
("Server Shutdown:", err)
}
("Server exiting")
The above code snippet will start shutting down the server when it receives a SIGINT or SIGTERM signal. The () function will block until all requests have been processed.
Elegant stop using HTTP request
Sometimes we may need to control it from the outside, and at this time we can delete the code that listens to the system signal and add an HTTP interface to receive the stop command.
("/api/shutdown", func(c *) {
err := (())
if err != nil {
("Server Shutdown:", err)
}
("Server exiting")
})
Handle timeout gracefully
In actual operation, we may need to worry that some requests will take a long time to complete. We can add a timeout context to the Shutdown() function to handle this situation.
ctx, cancel := ((), 5*)
defer cancel()
if err := (ctx); err != nil {
("Server Shutdown:", err)
}
("Server exiting")
This code will wait for up to 5 seconds. If all requests have been processed within this time, then exit directly. Otherwise, it will force exit.
Summarize
This article details how to achieve elegant restart and stop services in the Gin framework of Go language, including listening to system signals, HTTP requests, and timeout control. Hopefully these methods and sample code will help you. Whether you need code updates or routine maintenance, you can ensure the availability of your application and data consistency.
The above is the detailed content of the Go Gin framework's elegant restart and stop implementation method example. For more information about the Go Gin framework's restart and stop, please pay attention to my other related articles!