Re: [Quickfix-developers] Log and Message Store

[Oren M. <ore...@ya...>]

Verma,
 
This store is a persistant storage device that keeps track of everything required to recover the state of the fix engine.  It only stores what is absolutely necessary.  For instance, only outgoing messages are stored because they are the only ones required to recover a session.  The state is kept only for the duration of a session and is reset at the start of a new session.
 
The log is an actual record of everything that occurs complete with timestamps.  The incoming and outgoing logs show messages being transmitted back and forth, and the event log displays any unusual events that occur with descriptive text.  The logs build up over time and are a record of all occurances that is never reset but appended to.
 
The store is required for a session to exist, while the log is optional.

"Verma, Sanjay" <SV...@Cr...> wrote:

Why does QF store messages in a "Log" and a "MessageStore" ? I am trying to write a class that uses Sybase for storing messages and would like to understand the rationale behind using log and store rather than a single store of messages with the necessary funcationality.

Thanks. 
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