Libkv
libkv is a unified library to interact with different key-value store backends. libkv was originally part of Docker Swarm v1 in the very first versions of the development. Later, all code related to key-value store discovery services was refactored and moved to www.github.com/docker/libkv.
libkv allows you to execute CRUD operations and also to watch key-value entries from different backends, so we can use the same code to work with all HA distributed key-value stores, which are Consul, Etcd, and ZooKeeper as shown in the following figure. At the time of writing, libkv also supports a local store implemented using BoltDB.
How to use libkv
To ...
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