noSQL implementation: threaded messaging system -


i'm trying build threaded messaging system website. system provides following features :

  • allow users send messages between each other
  • arbitrary levels of replies (threads)

i tried using mysql+php , has built skeleton. in whole thread retrieving part kinda recursive, believe not best thing relational schema can do. i'm researching non-sql implementation. avoid such problem making data retrieval more natural.

anybody has such experience give me hint please.

update: client app written in php , remain so.

a document database, or object database, accomplish you're looking quite well. there ways can rdbms work well. example schema is:

create table messages (   message_id int,   original_message_id int,   parent_message_id int,   message varchar(4000) );

you can perform selects table like

select * messages message_id = ? or original_message_id = ? order parent_message_id;

this solve problem. advantage doing oodb or document database you'll able pull of data 'conversation' using 1 query, since it's stored together. on downside, sacrifice ad hoc querying flexibility convenience of reading of data @ once.


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