Amazon MemoryDB vs etcd
Amazon MemoryDB
aws.amazon.com
etcd
etcd.ioSide by side
| Figure | Amazon MemoryDB | etcd |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | — |
| Windows | — | Yes |
| macOS | — | Yes |
| Linux | — | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 2 | 1 |
| Spec score · Key-Value Databases | 7.4 (#19) | 8.0 (#7) |
| Performance | AWS says MemoryDB stores the full dataset in memory and provides microsecond read latency and single-digit millisecond write latency. | The project states etcd is benchmarked at thousands of writes per second per instance. |
| Security | MemoryDB runs in Amazon VPC, supports encryption at rest through AWS KMS and encryption in transit with TLS, and Graviton2 nodes include always-on 256-bit DRAM encryption. | etcd supports TLS and client-certificate authentication for client-to-server and peer communication, but these security features are not enabled by default. |
Plans
Amazon MemoryDB
- On-demand nodesPrice not published
- Reserved nodesPrice not published
In their own words
Amazon MemoryDB
Amazon MemoryDB has no write-up on Specifiction yet; its figures are above.
etcd
etcd is an open-source, strongly consistent distributed key-value store for data used by distributed systems and clusters of machines. It arranges values in hierarchical directories and lets clients watch keys or directories for changes. Clients can read and write values with standard HTTP tools such as curl, and keys may have optional time-to-live expiration. The project uses the Raft protocol and handles leader elections during network partitions, including when a leader machine fails. etcd is a core Kubernetes component and its primary datastore. The project provides pre-built binaries, source builds, and container images. Linux on AMD64 and ARM64 is tier 1; Darwin and Windows on either architecture are tier 3, and other platforms are unsupported. TLS and client-certificate authentication are supported for client and peer connections, but neither is enabled by default. The software is self-hosted and licensed under Apache 2.0, with a listed price of free. The integrations listing includes Kubernetes, CoreDNS, and language client libraries, while warning that third-party tools and libraries there are not tested or maintained by the etcd team.