Data compression is the compacting of data by decreasing the number of bits that are stored or transmitted. This way, the compressed info needs considerably less disk space than the original one, so more content can be stored on identical amount of space. You'll find many different compression algorithms which function in different ways and with a number of them only the redundant bits are erased, so once the information is uncompressed, there's no decrease in quality. Others erase excessive bits, but uncompressing the data at a later time will result in reduced quality compared to the original. Compressing and uncompressing content needs a large amount of system resources, particularly CPU processing time, so any hosting platform that employs compression in real time needs to have ample power to support this feature. An example how info can be compressed is to replace a binary code such as 111111 with 6x1 i.e. "remembering" how many sequential 1s or 0s there should be instead of saving the entire code.
Data Compression in Shared Hosting
The compression algorithm that we use on the cloud web hosting platform where your new shared hosting
account shall be created is named LZ4 and it's applied by the leading-edge ZFS file system that powers the system. The algorithm is superior to the ones other file systems employ because its compression ratio is a lot higher and it processes data considerably faster. The speed is most noticeable when content is being uncompressed since this happens even faster than data can be read from a hard disk. Because of this, LZ4 improves the performance of every Internet site stored on a server which uses this algorithm. We take full advantage of LZ4 in an additional way - its speed and compression ratio let us generate several daily backups of the full content of all accounts and store them for one month. Not only do our backup copies take less space, but in addition their generation doesn't slow the servers down like it often happens with many other file systems.
Data Compression in Semi-dedicated Servers
The semi-dedicated server
plans which we offer are created on a powerful cloud hosting platform which runs on the ZFS file system. ZFS uses a compression algorithm named LZ4 that is greater than any other algorithm on the market in terms of speed and data compression ratio when it comes to processing web content. This is valid especially when data is uncompressed because LZ4 does that faster than it would be to read uncompressed data from a hard disk drive and for that reason, sites running on a platform where LZ4 is enabled will function quicker. We're able to benefit from the feature regardless of the fact that it needs quite a considerable amount of CPU processing time as our platform uses a huge number of powerful servers working together and we don't create accounts on a single machine like most companies do. There is an additional advantage of using LZ4 - considering that it compresses data very well and does that very quickly, we can also make multiple daily backups of all accounts without affecting the performance of the servers and keep them for a whole month. By doing this, you'll always be able to recover any content that you erase by accident.