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How to avoid deadlock problems in your application? _PHP Tutorial
How to avoid deadlock problems in your application? _PHP Tutorial
An unavoidable feature of any lock-based concurrency system is that under certain conditions the system may block. 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.
In order to obtain the best scalability, performance and concurrency, when designing applications and query statements, attention should be paid to shortening the length of transactions and reducing the time of lock ownership. 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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