Download the PHP package phphleb/conductor without Composer
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Informations about the package conductor
Use of mutexes in a project (including projects based on the HLEB2 framework)
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The use of mutexes is worthwhile in cases, when access to any code is to be locked, until it is executed in the current process or the set locking time period expires.
For example, repetitive simultaneous API requests can cause a parallel recording one and the same value into the data base. In order to avoid such event, a section of the code responsible for recording is to be transformed by mutex methods. There are only three such mutex methods: acquire, release and unlock.
FileMutex
When setting the time period for locking (the second argument acquire in seconds), it should be taken into account that, if an active process is unable to unlock the mutex on its own, other processes from the non-sequential queue that have addressed to this code will continue working only after this time period has expired. That is why they will be completed, in a case of a long delay, at the web server level by timeout waiting for a response from the script.
Installation in a project based on the framework HLEB
Create a console commands php console mutex/db-stat, php console mutex/predis-stat and php console mutex/file-stat to get statistics on active mutexes:
Installation in another project
Using Composer (or copy the files into the vendor folder of the project):
Own configuration (to be installed once):
Files of a mutex type are usually applied only for one backend server; otherwise, you can try to synchronize the folder with the tag files of mutexes. However, if it is possible, it will be better to use mutexes based on storing the tags in the data base.
DbMutex
The locks with the stored status in the data bases – similar implementation of mutexes. The same methods – acquire, release и unlock – are used, as well as connecting your own configuration.
The difference lies in the class used for initializing the mutex.
By default, the configuration settings are taken from the mutex.db.type (config/database.php).
Supported MySQL / MariaDB / PostgreSQL.
PredisMutex
Redis is connected in the same way.
Requires predis/predis library.
The configuration will be loaded from the redis.db.type setting.
All versions of conductor with dependencies
phphleb/updater Version *
ext-readline Version *
ext-pdo Version *
phphleb/hredis Version dev-main