=========== NODE_KOA_MySQL_MONGO ============== https://github.com/AleksandrNi/node_koa_mysql_mongo routes 1. '/createjson' //make request to different url to receive not valid json //create valid json files from not valid json, result in.public/filtered 2.'/uploaddb' //create mysql table and upload data there from json files (/public/filtered) information about created file [ name, mime type, size] saved into MongoDB for a while file content [json] will be uploaded in MySQL, then information about the file will be deleted form mongo. 3. '/' client interface // form to make request with custom params // form to make update row 4. '/query' // compile request from ctx.request.body to db and sendback answer 5. '/update' //update rows in db