# etcd vs Hazelcast

| Attribute | etcd | Hazelcast |
|---|---|---|
| **vioscaleAI score** | 58.5 (43% (low)) | 60.7 (56% (medium)) |
| activity.commits_last_30d | 70 | 80 |
| adoption.dependent_repos | 39,452 | 10,433 |
| adoption.github_stars | 52,359 | 6,620 |
| adoption.package_downloads_weekly | - | 3,112 |
| content.faq | `[{"answer":"etcd is a strongly consistent, distributed key-value store that provides a reliable way to store data that needs to be accessed by a distributed system or cluster of machines. It gracefully handles leader elections during network partitions and can tolerate machine failure. It is indexed under Key-Value Stores.","source":"https://etcd.io","question":"What is etcd?","confidence":0.6},{"answer":"etcd is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://etcd.io","question":"Is etcd free to use?","confidence":0.6},{"answer":"etcd supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://etcd.io","question":"What platforms does etcd support?","confidence":0.6},{"answer":"Yes. etcd can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://etcd.io","question":"Can etcd be self-hosted?","confidence":0.6},{"answer":"We have confirmed 29 integrations for etcd, including Kubernetes, Vitess, fleet, Docker, Puppet, confd, AWS ECS and SkyDNS, plus 21 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://etcd.io","question":"What does etcd integrate with?","confidence":0.6},{"answer":"Yes. etcd is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/etcd-io/etcd","question":"Is etcd open source?","confidence":0.95}]` | `[{"answer":"Hazelcast is a distributed data platform that provides real-time processing and continuous intelligence capabilities. It supports clustering and integrates with various frameworks and clients. It is indexed under Key-Value Stores.","source":"https://hazelcast.com","question":"What is Hazelcast?","confidence":0.6},{"answer":"Hazelcast supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://hazelcast.com","question":"What platforms does Hazelcast support?","confidence":0.6},{"answer":"Yes. Hazelcast can be deployed cloud / SaaS, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://hazelcast.com","question":"Can Hazelcast be self-hosted?","confidence":0.6},{"answer":"We have independently confirmed GDPR for Hazelcast. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Hazelcast not holding them. Always confirm compliance directly before you rely on it.","source":"https://hazelcast.com/blog/health-information-privacy/","question":"What security certifications does Hazelcast have?","confidence":0.7},{"answer":"Yes. Hazelcast is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://www.npmjs.com/package/hazelcast-client","question":"Is Hazelcast open source?","confidence":0.85}]` |
| deployment.options | `{"self_hosted":true}` | `{"cloud":true,"hybrid":true,"self_hosted":true}` |
| description.long | A distributed key-value store designed to reliably store and manage critical shared state across multiple machines. It provides strong consistency guarantees via consensus, automatic TLS encryption, and gRPC APIs. | A distributed, in-memory computing platform that combines caching, stream processing, and data integration to enable real-time applications with low-latency data access and instant decision-making. |
| features.capabilities | `{"clustering":"consensus","deployment":"self_hosted","consistency":"strong","persistence":"append_log","eviction_ttl":true,"storage_tier":"persistent","licence_class":"permissive","wire_protocol":"grpc","pubsub_streams":true,"data_structures":"rich_types","redis_api_compat":"none"}` | `{"clustering":"replicated","deployment":"self_hosted","autoscaling":true,"consistency":"strong","open_source":true,"persistence":"durable","eviction_ttl":true,"storage_tier":"in_memory","latency_class":"sub-second","pricing_model":"open-source-self-host","streaming_sql":true,"wire_protocol":"custom","pubsub_streams":true,"data_structures":"kv_only","deployment_model":"self-hosted","delivery_guarantee":"exactly-once","stateful_processing":true}` |
| integrations.count | 80 | 6 |
| integrations.list | `[{"name":"Kubernetes"},{"name":"Vitess"},{"name":"fleet"},{"name":"Docker"},{"name":"Puppet"},{"name":"confd"},{"name":"AWS ECS"},{"name":"SkyDNS"},{"name":"discodns"},{"name":"Hiera"},{"name":"Chef"},{"name":"BOSH"},{"name":"etcdctl"},{"name":"etcd-backup"},{"name":"etcd-dump"},{"name":"etcd-fs"},{"name":"etcd-browser"},{"name":"etcd-console"},{"name":"etcd-viewer"},{"name":"etcdtool"},{"name":"etcd-rest"},{"name":"etcdsh"},{"name":"etcdloadtest"},{"name":"etcd-workbench"},{"name":"Apache Celix"},{"name":"ZeroMQ"},{"name":"CoreOS"},{"name":"MySQL"},{"name":"GPG"},{"name":"CoreDNS","category":"dns"},{"name":"PostgreSQL","category":"database"},{"name":"Consul","category":"service_discovery"},{"name":"ZooKeeper","category":"coordination"}]` | `[{"name":"Spring Integration"},{"name":"MongoDB"},{"name":"Kafka","native":true},{"name":"Hadoop","native":true},{"name":"S3","native":true},{"name":"RDBMS","native":true},{"name":"JMS","native":true},{"name":"Oracle Database","native":true,"category":"database","direction":"bidirectional"},{"name":"Microsoft SQL Server","native":true,"category":"database","direction":"bidirectional"},{"name":"JDBC","native":true,"category":"database","direction":"bidirectional"}]` |
| language.primary | Go | Java |
| license.spdx | Apache-2.0 | Apache-2.0 |
| platform.support | `{"cli":true,"mac":true,"linux":true,"windows":true}` | `{"cli":true,"linux":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://etcd.io","retrievedAt":"2026-09-10T21:11:03.864Z"}` | `{"type":"quote","sourceUrl":"https://hazelcast.com","retrievedAt":"2026-08-03T21:11:26.502Z"}` |
| pricing.free_tier | no | - |
| pricing.model | open_source | commercial |
| pricing.price_level | free | unknown |
| pricing.transparent | yes | no |
| release.cadence_days | - | 15 |
| release.history | `[{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.7.2","date":"2026-09-22T21:22:39Z","type":"stable","version":"v3.7.2"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.6.15","date":"2026-09-22T21:06:14Z","type":"stable","version":"v3.6.15"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.5.34","date":"2026-09-22T20:50:57Z","type":"stable","version":"v3.5.34"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.7.1","date":"2026-07-23T19:37:53Z","type":"stable","version":"v3.7.1"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.6.14","date":"2026-07-23T19:29:31Z","type":"stable","version":"v3.6.14"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.5.33","date":"2026-07-23T19:12:21Z","type":"stable","version":"v3.5.33"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.7.0","date":"2026-07-08T18:26:53Z","type":"stable","version":"v3.7.0"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.6.13","date":"2026-07-01T20:43:27Z","type":"stable","version":"v3.6.13"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.5.32","date":"2026-07-01T20:32:19Z","type":"stable","version":"v3.5.32"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.7.0-rc.0","date":"2026-06-01T21:27:32Z","type":"prerelease","version":"v3.7.0-rc.0"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.6.12","date":"2026-06-01T20:59:07Z","type":"stable","version":"v3.6.12"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.5.31","date":"2026-06-01T20:46:06Z","type":"stable","version":"v3.5.31"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.4.45","date":"2026-06-01T20:35:12Z","type":"stable","version":"v3.4.45"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.7.0-beta.0","date":"2026-05-19T20:02:08Z","type":"prerelease","version":"v3.7.0-beta.0"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.6.11","date":"2026-05-01T18:55:08Z","type":"stable","version":"v3.6.11"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.5.30","date":"2026-05-01T18:46:50Z","type":"stable","version":"v3.5.30"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.4.44","date":"2026-05-01T18:38:42Z","type":"stable","version":"v3.4.44"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.6.10","date":"2026-04-01T18:34:55Z","type":"stable","version":"v3.6.10"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.5.29","date":"2026-04-01T18:29:01Z","type":"stable","version":"v3.5.29"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.4.43","date":"2026-04-01T18:23:35Z","type":"stable","version":"v3.4.43"}]` | `[{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.7.0","date":"2026-05-13T10:46:12Z","type":"stable","version":"v5.7.0"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.6.0","date":"2025-10-15T14:47:06Z","type":"stable","version":"v5.6.0"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.5.0","date":"2024-07-26T17:03:03Z","type":"stable","version":"v5.5.0"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.3.8","date":"2024-07-17T14:13:54Z","type":"stable","version":"v5.3.8"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.4.0","date":"2024-04-15T17:55:57Z","type":"stable","version":"v5.4.0"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.3.7","date":"2024-04-03T10:23:29Z","type":"stable","version":"v5.3.7"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.2.5","date":"2024-02-26T14:47:57Z","type":"stable","version":"v5.2.5"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.3.6","date":"2023-11-09T14:00:06Z","type":"stable","version":"v5.3.6"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.3.5","date":"2023-10-24T14:59:38Z","type":"stable","version":"v5.3.5"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.3.2","date":"2023-08-21T15:41:18Z","type":"stable","version":"v5.3.2"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.0.5","date":"2023-06-28T13:47:26Z","type":"stable","version":"v5.0.5"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.1.7","date":"2023-06-19T14:02:07Z","type":"stable","version":"v5.1.7"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.2.4","date":"2023-06-13T12:40:26Z","type":"stable","version":"v5.2.4"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.3.1","date":"2023-06-09T09:24:01Z","type":"stable","version":"v5.3.1"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v4.2.8","date":"2023-05-29T09:56:41Z","type":"stable","version":"v4.2.8"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.3.0","date":"2023-05-19T06:32:29Z","type":"stable","version":"v5.3.0"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.1.6","date":"2023-05-10T10:55:54Z","type":"stable","version":"v5.1.6"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.3.0-BETA-2","date":"2023-04-12T10:58:26Z","type":"stable","version":"v5.3.0-BETA-2"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.2.3","date":"2023-03-23T13:28:16Z","type":"stable","version":"v5.2.3"},{"url":"https://github.com/hazelcast/hazelcast/releases/tag/v5.3.0-BETA-1","date":"2023-03-17T06:49:49Z","type":"stable","version":"v5.3.0-BETA-1"}]` |
| reliability.status_page | - | yes |
| security.gdpr | - | yes |
| security.scorecard | 6.9 | 4.2 |
| security.trust_center | https://etcd.io/docs/v3.4/op-guide/security/ | - |
| security.vulnerabilities | `{"count":8,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=go.etcd.io%2Fetcd&per_page=100","last_12m":3,"max_severity":"HIGH"}` | `{"count":10,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.hazelcast%3Ahazelcast&per_page=100","last_12m":2,"max_severity":"CRITICAL"}` |

## Capabilities (Key-Value Stores)

| Capability | etcd | Hazelcast |
|---|:--:|:--:|
| **Storage** |  |  |
| Storage tier | Persistent | In-memory |
| Persistence | Append-only log | Fully durable |
| Data structures | Rich types | KV-only |
| **Protocol** |  |  |
| Wire protocol | gRPC | Custom |
| **Distribution** |  |  |
| Clustering | Consensus (Raft) | Replicated |
| Consistency | Strong | Strong |
| **Ops** |  |  |
| Eviction / TTL policies | ✓ | ✓ |
| Multi-threaded | - | - |
| Pub/Sub / streams | ✓ | ✓ |
| Transactions / atomic ops | - | - |
| **Deployment** |  |  |
| Deployment | Self-hosted | Self-hosted |
| **Licensing** |  |  |
| Licence class | Permissive OSS | - |
| **Compatibility** |  |  |
| Redis API compatibility | None | - |

*Source: vioscaleAI. Generated 2026-10-16T19:02:06.261Z. "-" = undocumented, not absent.*