uchus.online

First of all, that's my own rewrite of cakephp implementation with security bug fixes and yii2 as core framework, including various optimizations. This site helps Russian pupils pass Unified State Examination. The site has both free and paid content. Users can discuss stuff via internal forum, which is fully integrated into the system. As for optimization, site hosted on VDS with 4 x 2.0 GHz CPU and near 3000 visits per day barely reaches 4% server load. As for user base, it's bear 50K records in the DB. Site also uses a lot of background jobs to do various stuff with data.