Estuary

Dictionary designed for read-mostly scene.

It can provide 200M read QPS on single machine. And more than 2M write QPS without persistence.

Key Features

• lock-free read
• high read performance
• support key and value with variable length
• have a very low failure rate in theory
• aceptable space overhead (ablout 21 bytes per item + 10% data size)
• work on 64bit CPU with little-endian memory order

The Lucky Version

It can provide up to half a billion read QPS per machine. And more than one million write QPS without persistence.

Key Features

• lock-free read
• very high read performance
• key and value should have fixed size
• actually work, but not be theoretically safe (we are usually lucky enough)
• resonable space overhead (ablout 10 bytes per item)
• work on 64bit CPU with little-endian memory order

Other Read-only Solutions

• low space overhead
• high read performance

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