How to avoid deadlock in php development

An inevitable feature of any lock-based concurrency system is that the system may block under certain conditions. When one connection holds a lock and another connection attempts to change the lock's state, the second connection either waits for the first connection to release the lock, or is blocked as a result.

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In order to obtain the best scalability, performance and concurrency capabilities, you should pay attention when designing applications and query statements Try to shorten the length of the transaction and reduce the time of holding the lock. Most concurrency problems tend to occur during the design phase of applications and databases, so it is crucial to fully consider this factor during the design phase.

Otherwise, the application will have potential bugs that will usually not be discovered until application scalability testing.

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