Preparation OpenHFT/Chronicle-Map OpenHFT/Chronicle-Map Replication Design Overview Each Chronicle Map is split into N completely independent, ordered segments the number of segments is chosen during the Chronicle Map creation and is never changed. each segment has an associated 3-level lock (the read, update and write levels). Query Flow Compute the hash code of the queried key.

Preparation OpenHFT/Chronicle-Map Key points Enterprise Edition feature It’s TCP/IP Replication TCP/IP Throttling - only broadcasts the latest update of each entry How Chronicle Map Replication works Refer to an instance of a remote map as a node. Each node can be connected to up to 128 other nodes. each remote map mirrors its changes over to another remote map.

Replicate your Key Value Store across your network, with consistency, persistance and performance. — OpenHFT Chronicle-Map github.com/OpenHFT/Chronicle-Map Features Ultra low latency: Chronicle Map targets median latency of both read and write queries of less than 1 microsecond in certain tests. High concurrency: Write queries scale well up to the number of hardware execution threads in the server. Read queries never block each other.