For our active CT log services, we have implemented rate limiting policies. During operations, we may make temporary adjustments based on real-time conditions; any long-term policy changes will be formally announced.

The rate limiting policies currently enforced on a per-shard basis are as follows:

Classic Logs (RFC 6962)

For reference, our current primary rate-limiting rules are as follows:

• get-entries: 10 rps per IP
• tile/data: 15 rps per IP
• add-chain: 20 rps per IP
• add-pre-chain: 30 rps per IP
• add-chain & add-pre-chain combined: Global shared limit of 400 rps

Static Logs (static-ct-api)

For reference, our current primary rate-limiting rules are as follows:

• tile/data: 15 rps per IP
• add-chain: 20 rps per IP
• add-pre-chain: 30 rps per IP
• add-chain & add-pre-chain combined: Global shared limit of 400 rps

TrustAsia CT Log Operations Team