Php: real-time display of table seats status 0 blank 1 placeholder

Php: table seats, if the real-time display status is 0, the vacant space occupies 1 Space
Please recommend technical keywords for Round Robin
It is a waste of bandwidth and resources to check the status of multiple terminals.
Please help resolve the problem

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Php: if the real-time display of the table seat status is 0, the vacant space is 1.
Please recommend technical keywords for Round Robin
It is a waste of bandwidth and resources to check the status of multiple terminals.
Please help resolve the problem

Swoole, websocket, and icomet (a comet server)

Workerman.net

Socket. io

First, we recommend socket. io and php swoole.
In addition, how many terminal poll can take the server round-robin? According to your statement, five rounds of requests per second will not generate a server.