Data-management

Sometimes there is a need arises for saving data locally on a device, be it server data caching, managing game progress for offline games, or storing user preferences. First, you write necessary data in plain text, then you switch to JSON for readability, after that you want to protect your files from curious users. Next time you notice that your data takes too much space on a device, so you want to compress your data. The improvement process can go indefinitely, so here is my take on solving that kind of problems.