The disclosed embodiments relate to systems/methods for data message matching in a peer-to-peer exchange system. Within the peer-to-peer exchange system, a dedicated processing instance attempts to match incoming data messages to resting message previously converted to the market data by other dedicated processing instances within the peer-to-peer exchange system. The market data stored within mirrored data structures on the dedicated processing instances, such that each instance may individually and independently attempt to match its respective data messages to all currently resting messages. When the incoming data message at least partially fails to be matched, the dedicated processing instance may determine whether to convert the unmatched portion to a resting message within the market data.