A Simple Guide To Using WordPress Transients

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A Simple Guide To Using WordPress Transients
A major reason for the immense popularity of
WordPress is its convenient nature. Whether you
are a coder or a non-technical user, you get
access to a variety of features that ease your
workflow. In this post, we are discussing one
such helpful feature called transients.
Developers are regularly using the WordPress
transients API to store some cached data with
time restrictions in their database. Many
beginners will not be aware of this technique
which can help them in using caching effectively.
Here we will discuss this topic in detail and
tell how all kinds of users can employ the
technique to fulfil their requirements.
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What Is Transients API?
Caching is a vital part of your websites
performance. It allows you to store key
information in such a manner that it can be
immediately served to anyone who requests it. The
Transients API is a caching tool that helps users
save the data with an expiry time. This means
that the information is automatically deleted
once that specified date-time is reached. It
helps in minimizing the number of queries that
your interface has to process. Moreover, defining
an expiration schedule helps in automatically
cleaning up your database.
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Why Should You Use Transients?
Are you an aspiring developer who is still
learning about different facets of WordPress?
Then you must be wondering why should you use
this caching mechanism. There are already tools
like caching plugins, available for the purpose.
Caching in WordPress is usually about storing a
complete web page which is then served to
requesting users. However, consider another
scenario where you want to cache only an
object. We will try to explain this with an
example. Lets say you want to integrate an
Instagram module for your interface. This module
will display all your latest posts on the social
network. Now, if you make the simple integration,
all the posts will be fetched every time the
specific page is loaded in a browser. This can
affect your websites performance as the server
has to deal with the extra load during every
request.
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How To Use Transients?
Generally, transients are stored in the database
of your installation. However, tools like
Memcached plugins can switch their storage to
memory. It will be pertinent, therefore, to never
assume your database as the only place to locate
transients. They must also be used for storing
only that information which will expire after a
certain period of time. 1. Saving A
Transient When saving a transient, you will have
to use set_transient() in the following
manner set_transient( transient, value,
expiration ) Here transient is the name of the
transient which must not exceed 172 characters.
value is the data which needs to be saved and
expiration is the number of seconds after which
the data will be refreshed. Look at the example
given below
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Fetching A Transient
When you want to fetch a saved transient, you
will have to use get_transient() in this
way get_transient( transient ) Here transient
is the same entity name which we used in
set_transient. You can fetch the box color of our
example like this get_transient( 'box_color'
) Remember if the transient has expired or does
not exist, you will get a false value. Removing
A Transient In case, you want to delete your
transient before the expiration period then you
can use delete_transient() like
this delete_transient( transient )
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