Cover of the book Symfony 5: The Fast Track

Symfony 5: The Fast Track is the best book to learn modern Symfony development, from zero to production. +300 pages in full color showing how to combine Symfony with Docker, APIs, queues & async tasks, Webpack, Single-Page Applications, etc.

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LockHandler

LockHandler

Caution

The LockHandler utility was removed in Symfony 4.0. Use the new Symfony Lock component instead.

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