Calvin - Determinism, Distributed ACID transactions (2020)
Calvin is a transaction scheduling and replication protocol designed for distributed ACID transactions. It utilizes a deterministic locking mechanism, which eliminates the need for an atomic commit protocol, thus reducing contention in distributed transactions. This article focuses on Calvin's approach compared to other solutions like Spanner.
- ▪Calvin provides distributed ACID transactions for partitioned and replicated systems.
- ▪The protocol's deterministic nature removes the need for 2-Phase Commit, leading to lower contention.
- ▪Calvin aims to achieve serializability while allowing parallel execution of unrelated transactions.
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| Original publisher | Mydistributed |
| Canonical URL | https://www.mydistributed.systems/2020/08/calvin.html |
| Publication time | Mon, 18 May 2026 01:35:14 -0500 |
| Retrieval time | 2026-05-18T07:04:56.123Z |
| Last seen | 2026-05-18T07:04:56.123Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | tKWPh1XWNCpX |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
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| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
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Excerpt limited to ~120 words for fair-use compliance. The full article is at Mydistributed.
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