How does the industry make statistics on concurrency?

what tools or technologies are available for, java web

Mar.01,2021

basically only qps and tps are counted.

in fact, tools have nothing to do with language.

like Dianping's cat, Korea's pinpoint can be done.

there are others, such as nginx accesslog or by logging and collecting es.

or there are some frameworks that have their own limitations, which can only be viewed as a single service, and are not recommended if they cannot be summarized and viewed in one place.

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1e4f89a-43d68.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1e4f89a-43d68.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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