How TCP backlog works in Linux
When an application puts a socket into LISTEN state using the listen syscall, it needs to specify a backlog for that socket. The backlog is usually described as the limit for the queue of incoming connections. Because of the 3-way handshake used by TCP, an incoming connection goes through an intermediate state SYN RECEIVED before it reaches the ESTABLISHED state and can be returned by the accept s
How to propagate SIGTERM to a child process in a Bash script
Supervisord requires that the programs it is configured to run don’t daemonize themselves. Instead, they should run in the foreground and respond to the stop signal (TERM by default) by properly shutting down. Docker has a similar requirement for the commands specified in CMD and ENTRYPOINT instructions in Dockerfiles. In both cases, only the processes created directly by Supervisord or Docker rec
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