Memcached is an open-source, object-caching for general memory arrangement. It is intended to mitigate database burden, and along these lines pace up element Web applications. The system capacities to some degree like transient memory for your applications. Memcached keeps running on Unix, Linux, Mac OS X, and Windows. Memcached is simple yet powerful. Its simple and basic design promotes ease of development, quick deployment, and solves many problems that are usually facing large data caches. Its API is available for most popular languages. It also acts as an in-memory key-value store for small chunks of arbitrary data (objects, strings) from the results of database calls, API calls, or page rendering.
Memory caching systems store information in a straightforward way with the aim of serving future demands all the more rapidly. The put away information may be from prior calculations or duplicates of a unique quality from another stockpiling area. Perusing a reserve for asked for, put away information is altogether speedier than acquiring it from its unique area. At last, PCs and systems run a great deal all the more proficiently with a decent reserve.
In a world loaded with and subject to innovation, few could deny that it is continually changing, and at a confounding pace. With regards to the web, the interest for versatility, snappier association rates, and adaptable expenses has lead to different arrangements for both restricted and boundless facilitating. The purpose for these plans are simple; the delivery of content and the processing of applications are improved, a fact that cannot be overlooked.
Why you should choose Memcached Hosting (We highly recommend HostiServer)?
Although Memcached is usually sent out and used in (deserving people’s trust because of honesty, etc.) networks, some managers may wish to take added security measures where they would like to keep/hold control over the clients that connect. And mainly because it is a free & open source, high-performance, distributed memory object caching system, common in nature, but intended for use in speeding up the dynamic web applications by alleviating database load.
Defining Caching
cache
kaSH/
verb
gerund or present participle: caching
store away in hiding or for future use.
=COMPUTING
=store data in a cache memory.
=COMPUTING
=provide hardware with a cache memory.
It might be confounding, yet with better understanding of caching, it is a lot more easier to appreciate. At the base of the matter, a cache includes the duplication of information, making it unnecessary to have the first information so as to view something. As it were, it is an exceptional storage area that holds frequently used data temporarily.
Here are 5 of the many examples of functionality of Memcached as a service
Scalable Web Services – The unrestricted use of resource intensive features such as CRON.
Versioning System – More server backup.
Summarize Db Update Demographics – The increased accuracy of update analysis.
Online-member Tracking – Member activity transparency and easier maintenance of expired-member purges.
Communication Management – Much better spam control, and distributed locking service.
Quick Example
Example 1-
Cache Results
function get_xxx(xxx_id)
xxx = memcached_get(“xxx:” . xxx_id)
return xxx if defined xxx
xxx = fetch_xxx_from_database(xxx_id)
memcached_set(“xxx:” . xxx_id, xxx)
return xxx
end
Example 2-
Play with telnet
$ telnet localhost 11221
Trying 128.0.0.2…
Connected to localhost.
Escape character is ‘^]’.
get xxx
VALUE xxx 0 2
hi
END
stats
STAT pid 8861
(etc)
Pros and Cons of Memcached Hosting
Pros
Easy to scale
Webpage loads faster
Supports almost all of CMS platforms
Can be used to cache information that is difficult to gather
Simple to Deploy
Cons
Not much documentation support
Volatility (crash of server instance wipes any data stored within the session)
Difficult to delete Memcached entries
Sharing resources require reconfiguring the server
No further value besides being a value in-memory key
The Difference Between Memcached and other Caching Systems
Different frameworks like APC, permit you direct access to the cached information. Memcached caches data and not parsed scripts as APC does. This makes Memcached almost perfect to optimize MySQL. Memcached is much better suited for use with large caches that change versus APC which is not.
Here are lists of some basic Memcached Commands
Standard Protocol
The standard protocol of memcached includes running a specific command against an “item”. Item that consists of:
A 32bit “flag” value
An expiration time, in seconds. Can be up to 1 month or 30 days. After 1month or 30 days, is treated as a unix timestamp of an exact date.
Arbitrary data
A 64bit “CAS” value, which is kept unique.
A key (arbitrary string up to 250 bytes in length. No space or newlines for ASCII mode)
2. No Reply
Some or most ASCII commands allow a “noreply” version. One should not usually use this with the ASCII protocol because it is oddly impossible to align errors with the requests. It’s intent is to avoid having to wait for a return packet after executing a mutation command such as a set or add. The binary protocol properly implements noreply (quiet) statements. If you have a client which supports or uses the binary protocol, odds are good you may take advantage of this.
3. Storage Commands
Set
One of the most common command. By storing this data, possibly overwriting any existing data.
add
Storing this data, only if it does not already exist. The new items are mostly at the top of the LRU. And if an item already exists and an add fails, and it promotes the item to the front of the LRU anyway.
replace
Store this data, but only if the data already exists. It is almost never used, and exists for protocol completeness.
4. incr/decr
incr/decr Stands for Increment and Decrement. And if an item stored is the string representation of a 64bit integer, you may run decr or incr commands to modify that said number. You may only incr by positive values, or decr by positive values. They does not accept negative values. And if a value does not already exist, incr/decr will fail.
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Conclusion
In a world that is subject to innovation, we ourselves needs to cope up with it to not stay behind. We just need to make the right decisions in choosing certain things specially in our business. One must not stay stagnant. Explore the ocean!
