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FIX Adapter Reference Documentation

Managing the order book state

About order book state

In this manual, the term, order book state, refers to the combined status of the following at a moment in time:

  • Trader’s working orders
  • Trader’s current position
  • List of fills that constitute a trader’s position

Order book state models

TT FIX Adapter offers two models for managing the order book state for FIX order sessions:

  • Persistent
  • Non-persistent

Note: TT FIX Adapter requires all FIX price sessions to be non-persistent.

The following sections explain the differences between using persistent and non-persistent FIX order sessions and describe the considerations you must take into account when developing a FIX client so it correctly manages order book states.