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The New Dynamic Lock Refresh Update in Symfony 4.1

Symfony, owing to its perks of easy customization and dynamic web application development, has grown as a popular Open Source PHP framework. The framework is supported by an active community of web developers who are responsible for its regular improvements and updates. A recent update that caught the attention of various web development companies is the new Dynamic Lock refresh feature in Symfony 4.1 version.


The dynamic lock component, which was previously introduced as a mechanism to provide an authorized access to the various shared resource now gets all the more smart with this new update. If you have been using Symfony as a web development framework, you must be aware of the Lock Component that first came into the picture with the release of Symfony 3.4 version.

It was used as a mechanism for secured local (Filesystem, semaphore) and remote (Redis) access.

So, what is the Buzz About?

Well, to throw the light directly on the cat’s face, the buzz is about the new improved refresh () method that comes with the expiring lock feature of the lock component.

What is the ‘Expiring Locks’ feature?

Expiring Locks is one of the key features of the lock component that can be used by web developers to provide a time-based access to a resource. It is also called as ‘Time to Live’ feature that can be abbreviated as ‘TTL’.

A TTL is released after a specific amount of time is passed. But, the functionality of expiring locks feature failed to convince the developers owing to certain issues in its application over complex tasks.

The Issue Web Developers were Facing Previously:

When working on long tasks that required an indefinite amount of work and time, it became hard for the PHP programmers to choose an appropriate TTL for their tasks.

So, as a common practice they used to start their work with a moderate TTL and further depending on the work they further set the TTL to its original value using the refresh () method.

However, while handling more than one kind of tasks, the refreshed TTL fails to serve them appropriately for long and complex tasks. This faded the charm of lock component and limited its use among the web development companies.


What good news does the update bring along for the web developers?

To resolve the issue Symfony developers were facing while working on complex tasks. The community has updated the use of refresh () method.

According to the update, now a TTL is limited to a particular refresh () call. A TTL can be passed as an argument to a refresh () call and it is only applicable for that particular refresh () call and not the following refresh () call.

Now the web developers can use the feature of expiring locks more conveniently and smartly for even the most complex of tasks, and that too while handling multiple tasks.


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