Samba on Scale: Difference between revisions
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| [https://cassandra.apache.org/_/index.html Apache Cassandra 1-4] || Configurable, highest:<br />[https://cassandra.apache.org/doc/latest/cassandra/architecture/guarantees.html#lightweight-transactions-with-linearizable-consistency Single-key Linearizability with LWT]|| yes || [https://docs.datastax.com/en/developer/cpp-driver/2.16/topics/ yes] || |
| [https://cassandra.apache.org/_/index.html Apache Cassandra 1-4] || CQL || Configurable, highest:<br />[https://cassandra.apache.org/doc/latest/cassandra/architecture/guarantees.html#lightweight-transactions-with-linearizable-consistency Single-key Linearizability with LWT]|| yes || [https://docs.datastax.com/en/developer/cpp-driver/2.16/topics/ yes] || |
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| [https://cassandra.apache.org/_/index.html Apache Cassandra 5] || || Upcoming:<br />[https://thenewstack.io/an-apache-cassandra-breakthrough-acid-transactions-at-scale/ Strict Serializability] [https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-15%3A+General+Purpose+Transactions?preview=/188744725/188744736/Accord.pdf]|| yes || [https://docs.datastax.com/en/developer/cpp-driver/2.16/topics/ yes] || |
| [https://cassandra.apache.org/_/index.html Apache Cassandra 5] || CQL || Upcoming:<br />[https://thenewstack.io/an-apache-cassandra-breakthrough-acid-transactions-at-scale/ Strict Serializability] [https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-15%3A+General+Purpose+Transactions?preview=/188744725/188744736/Accord.pdf]|| yes || [https://docs.datastax.com/en/developer/cpp-driver/2.16/topics/ yes] || |
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| [https://www.foundationdb.org/ FoundationDB] || || [https://jepsen.io/consistency/models/strict-serializable Strict Serializability] || yes || yes || |
| [https://www.foundationdb.org/ FoundationDB] || K/V || [https://jepsen.io/consistency/models/strict-serializable Strict Serializability] || yes || yes || |
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| [https://www.cockroachlabs.com/ CockroachDB] || || [https://www.cockroachlabs.com/blog/consistency-model/#cockroachdbs-consistency-model-more-than-serializable-less-than-strict-serializability Serializable+], [https://www.cockroachlabs.com/blog/db-consistency-isolation-terminology/ Strong Partition Serializability] || LWT || yes || [https://jepsen.io/analyses/cockroachdb-beta-20160829 1] |
| [https://www.cockroachlabs.com/ CockroachDB] || SQL || [https://www.cockroachlabs.com/blog/consistency-model/#cockroachdbs-consistency-model-more-than-serializable-less-than-strict-serializability Serializable+], [https://www.cockroachlabs.com/blog/db-consistency-isolation-terminology/ Strong Partition Serializability] || LWT || yes || [https://jepsen.io/analyses/cockroachdb-beta-20160829 1] |
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| [https://www.scylladb.com/ ScyllaDB] || [https://docs.scylladb.com/stable/using-scylla/lwt.html Single-key Linearizability with LWT] || LWT || yes || |
| [https://www.scylladb.com/ ScyllaDB] || [https://docs.scylladb.com/stable/using-scylla/lwt.html Single-key Linearizability with LWT] || LWT || yes || |
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Revision as of 17:51, 8 March 2023
List of scalable Key/Value Stores
For an overview of Consistency Models see Jepsen or Wikipedia. Note: LWT are defined as multiple operations on a single key.
| Name | Type | Consistency Model | Transactions | C Client | Notes |
|---|---|---|---|---|---|
| ctdb | Volatile DBs: Basically Sequential Consistency Persistent DBs: Strict Serializability |
No Yes |
yes | ||
| etcd | K/V | Linearizability | LWT ("mini") | yes | |
| Ceph Rados | Linearizability | LWT via Object Operations | yes | ||
| YugabyteDB | Single-key Linearizability with LWT | yes | yes | ||
| Apache Cassandra 1-4 | CQL | Configurable, highest: Single-key Linearizability with LWT |
yes | yes | |
| Apache Cassandra 5 | CQL | Upcoming: Strict Serializability [1] |
yes | yes | |
| FoundationDB | K/V | Strict Serializability | yes | yes | |
| CockroachDB | SQL | Serializable+, Strong Partition Serializability | LWT | yes | 1 |
| ScyllaDB | Single-key Linearizability with LWT | LWT | yes | ||
| tikv | Strong Consistency[2] | yes (Percolator based) | no (C++) | ||
| Apache Pegasus | ? | ? | ? | no (C++) | |
| Apache HBase | ? | ? | ? | ? | |
| Apache Ignite | ? | ? | ? | ? |
Rapid Samba dbwrap backend prototyping
A new dbwrap backend called dbwrap_py that calls into Python for the database operations. Available backends:
List of Opensource Clustered Filesystems
| Name | Built on-top of Object Storage | Notes |
|---|---|---|
| Ceph | yes | |
| GlusterFS | no | |
| JuiceFS | yes | |
| MooseFS | no | |
| ObjectiveFS | yes | |
| Lustre | no | |
| BeegFS | no |
Links
- A Comparison of Scalable Database Isolation Levels
- Correctness Anomalies Under Serializable Isolation
- Comparison of a few SQL and no-SQL DBs
- Summary of Paxos, Multipaxos, Raft, Epaxos and ACCORD
- Nice Summary of Consistency Models and Issues in CockroachDB
- FUSE Filesystem on-top of FoundationDB
- YCSB
- Benchant YCSB Ranking
- How FoundationDB works
- Fast General Purpose Transactions in Apache Cassandra
- Comparing Distributed Transaction Architectures for the Cloud Era
- MIT Distributed Systems Course