Data compression is the compacting of info by reducing the number of bits which are stored or transmitted. In this way, the compressed info needs less disk space than the original one, so additional content can be stored on the same amount of space. You will find different compression algorithms which work in different ways and with some of them just the redundant bits are deleted, therefore once the info is uncompressed, there is no loss of quality. Others erase unneeded bits, but uncompressing the data subsequently will result in lower quality compared to the original. Compressing and uncompressing content needs a significant amount of system resources, in particular CPU processing time, so any hosting platform which uses compression in real time should have sufficient power to support that feature. An example how data can be compressed is to substitute a binary code such as 111111 with 6x1 i.e. "remembering" what number of consecutive 1s or 0s there should be instead of saving the entire code.
Data Compression in Cloud Website Hosting
The ZFS file system that runs on our cloud hosting platform employs a compression algorithm named LZ4. The aforementioned is substantially faster and better than any other algorithm you will find, especially for compressing and uncompressing non-binary data i.e. internet content. LZ4 even uncompresses data faster than it is read from a hard disk, which improves the performance of websites hosted on ZFS-based platforms. Due to the fact that the algorithm compresses data very well and it does that very fast, we are able to generate several backup copies of all the content kept in the cloud website hosting accounts on our servers every day. Both your content and its backups will require less space and since both ZFS and LZ4 work very quickly, the backup generation will not change the performance of the servers where your content will be kept.
Data Compression in Semi-dedicated Servers
The semi-dedicated server plans that we provide are created on a powerful cloud platform that runs on the ZFS file system. ZFS uses a compression algorithm known as LZ4 that is greater than any other algorithm available in terms of speed and compression ratio when it comes to processing website content. This is valid especially when data is uncompressed as LZ4 does that more quickly than it would be to read uncompressed data from a hard disk drive and for that reason, Internet sites running on a platform where LZ4 is enabled will work at a higher speed. We can take full advantage of the feature despite of the fact that it needs quite a lot of CPU processing time as our platform uses many powerful servers working together and we don't create accounts on just a single machine like most companies do. There's one more advantage of using LZ4 - considering the fact that it compresses data very well and does that speedily, we can also make multiple daily backups of all accounts without affecting the performance of the servers and keep them for 30 days. In this way, you can always bring back any content that you erase by accident.