ruby-emdr-client | Super simple EMDR client written in Ruby

ruby-emdr-client is a Ruby library typically used in Retail applications. ruby-emdr-client has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

This is a very simple client for connecting to the EVE Market Data Relay network. This is a ZeroMQ network of user submitted information about the player-driven market in EVE Online. The messages received are in the Unified Uploader Data Interchange Format as specified by EVE Central. Players voluntarily upload market data as they are playing the game. When a player makes a market query in game, that data is cached locally on their computer. This cache can be parsed and uploaded through various clients. This is "drinking from the fire hose". I have seen the messages come in at over 20 a second. There are two types of messages: orders and history. The contents of the message depend on its type. For order messages, you'll have rowsets with a row for each order on the market. For high volume items, that could be hundreds of rows. For low volume items, it may only be a few. For history messages, you'll have a rowset with a row for each day. How many days depend on the date range the player specified in the client. It may only be a week's history, or could be a year's history. You should know what you want to do with this data and only keep the pieces you need. Keeping it all in a format that's easy to search is hard and will take a lot of disk space.