Best way to store chat messages in a database?

wilsonpage picture wilsonpage · Aug 15, 2011 · Viewed 122.1k times · Source

I'm building a chat app and I want a full history off all messages ever sent in the chat conversation. At the moment I am storing each message as a single row in a table called 'messages'. I am aware that this table could grow huge as even small messages like 'Hi' would have their own database record.

Can anyone recommend a more scalable mysql solution? I don't require the individual messages to be searchable, editable or deletable. Could the whole conversation be stored in one huge field?

Would love to hear your ideas!

Answer

jasalguero picture jasalguero · Aug 15, 2011

There's nothing wrong with saving the whole history in the database, they are prepared for that kind of tasks.

Actually you can find here in Stack Overflow a link to an example schema for a chat: example

If you are still worried for the size, you could apply some optimizations to group messages, like adding a buffer to your application that you only push after some time (like 1 minute or so); that way you would avoid having only 1 line messages