etcd

1. What is etcd

   etcd as a distributed, consistent key-value store for critical data.

2. Data Model

   Keys, revisions, MVCC and the flat key space.

3. API

   KV, Watch, Lease and other gRPC services.

4. API Guarantees

   Linearizability, serializability and ordering guarantees.

5. Learner Design

   Non-voting members for safe cluster growth.

6. Interacting with etcd

   etcdctl: put, get, watch, leases, transactions.

7. Clustering

   Bootstrapping and configuring multi-member clusters.

8. Authentication and RBAC

   Users, roles and permissions.

9. Transport Security

   TLS for client and peer communication.

10. Maintenance

    Compaction, defragmentation, quotas and snapshots.

11. Failure Modes

    Handling member failures and quorum loss.

12. Performance and Tuning

    Benchmarks and tuning heartbeats and election timeouts.

13. Monitoring

    Metrics and health checks.

Each section links to the official page. Titles and summaries by Extra Credit; the docs belong to their authors.

Source: endoflife.date