What
Is Memcached?
Memcached is very popular in-memory caching
software.
Memcached is an open-source, free,
high-performance, distributed memory object that speeds-up data-driven websites
by caching data and objects in RAM.
Memcached was first developed by Brad Fitzpatrick for his website
LiveJournal, on May 22, 2003.
Memcached is a component which stores data
temporally for 1hour, 6hour, 12hours, 1day etc.
Memcached is used by Wikipedia, Twitter, Facebook, Flickr, Netlog, YouTube, etc.
Who
Is the Author of Memcached?
The Author of Memcached is - Danga Interactive.
In
which Language Memcached Is Written?
Memcached is written in C language. It was
written by Danga Interactive.
When
Memcached's Initial Version Launched?
The initial version of Memcached was launched in
- May 22, 2003.
What
Is Official website of Nginx?
What
Is the best use of Memcached?
The Best use of Memcached:-
1. Easy
to install
2. Improve
the performance of web application by caching
3. Memcached
offers API integration for all the major languages like Java, PHP, C, C++,
Python, Ruby, Perl etc.
4. Reduced
the burden of a database server
5. We
can update the values of keys
6. We
can use Tags for keys
What
Are the limitations of Memcached?
1. Memcached
is not a database
2. Memcached
stores temporary data and permanently
3. Memcached
can’t cache large objects
Which
Memcached Command is used to get the Version?
Version
Which
Memcached Command is used to add the value of key?
Syntax
- add [key] [flags] [exptim] [bytes] [noreply]
Example
- add key 0 900 4
Which
Memcached Command is used to get the value of key?
get key
Which
Memcached Command is used to set the value of Key?
Syntax
- set [key] [flags] [exptim] [bytes] [noreply]
Example
- set key 0 900 4
Which
Memcached Command is used to show the Stats?
stats
Which
Memcached Command is used to delete the Key?
delete key
Which
Memcached Command is used to close the connection?
quit
How
would you update Memcached when data changes?
1. By
clearing the cache proactively
2. By
resetting the cache
What
conditions cache can’t retain the stored information?
When memory gets allocated for the cache is exhausted:-
1. When
an item from cache gets deleted
2. When
an individual item in the cache gets expired