The term data compression means reducing the number of bits of information which should be stored or transmitted. This can be done with or without the loss of info, which means that what will be removed throughout the compression can be either redundant data or unnecessary one. When the data is uncompressed subsequently, in the first case the info and its quality shall be identical, whereas in the second case the quality will be worse. There're different compression algorithms which are better for different kind of data. Compressing and uncompressing data normally takes lots of processing time, so the server carrying out the action needs to have adequate resources to be able to process your data quick enough. A simple example how information can be compressed is to store just how many sequential positions should have 1 and just how many should have 0 in the binary code as an alternative to storing the particular 1s and 0s.
Data Compression in Website Hosting
The ZFS file system that runs on our cloud hosting platform employs a compression algorithm called LZ4. The aforementioned is significantly 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 quicker than it is read from a hard drive, which improves the overall performance of Internet sites hosted on ZFS-based platforms. Since the algorithm compresses data very well and it does that quickly, we are able to generate several backup copies of all the content stored in the website hosting accounts on our servers daily. Both your content and its backups will require reduced space and since both ZFS and LZ4 work extremely fast, the backup generation will not affect the performance of the hosting servers where your content will be kept.