What are the current rate limits for Blue Ocean ATS sessions?
Blue Ocean ATS supports 20,000 messages/sec for FIX sessions and 50,000 messages/sec for SBE sessions.
Blue Ocean ATS enforces rate limits to ensure stable and fair access:
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FIX sessions: 20,000 messages per second
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SBE sessions: 50,000 messages per second
Additional system capacity:
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MEMO SBE ports: up to ~65,000 messages/second
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MEMOIR TCP Replay requests: no imposed rate limits (snapshots can be requested without restriction)
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System capacity: ~35 billion transactions per session (expandable if needed)
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Infrastructure: ~150 cores allocated to order entry ports
For context, this is roughly equivalent to the capacity MEMX uses for its equities and options exchanges during core hours.