8000 [#6953] add versionadded directive · symfony/symfony-docs@50469f2 · GitHub
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[#6953] add versionadded directive
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‎console/lockable_trait.rst

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Prevent Multiple Executions of a Console Command
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================================================
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.. versionadded:: 3.2
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The ``LockableTrait`` was introduced in Symfony 3.2.
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A simple but effective way to prevent multiple executions of the same command in
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a single server is to use **file locks**. The Filesystem component provides a
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:doc:`LockHandler </components/filesystem/lock_handler>` class that eases the

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