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32 lines
2.9 KiB
Markdown
32 lines
2.9 KiB
Markdown
9 years ago
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# rqlite
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You can find details on the design and implementation of rqlite from [these blog posts](http://www.philipotoole.com/tag/rqlite/).
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9 years ago
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rqlite was also discussed at th [GoSF](http://www.meetup.com/golangsf/) [April 2016](http://www.meetup.com/golangsf/events/230127735/) Meetup. You can find the slides [here](http://www.slideshare.net/PhilipOToole/rqlite-replicating-sqlite-via-raft-consensu).
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9 years ago
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## Node design
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9 years ago
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The diagram below shows a high-level view of a rqlite node.
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┌ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ┐ ┌ ─ ─ ─ ─ ┐
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Clients Other
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└ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ─ ┘ │ Nodes │
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│ ─ ─ ─ ─ ─
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│ ▲
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│ │
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│ │
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▼ ▼
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┌─────────────────────────────┐ ┌───────────────┐
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│ HTTP(S) │ │ TCP │
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└─────────────────────────────┘ └───────────────┘
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┌───────────────────────────────────────────────┐
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│ Raft (hashicorp/raft) │
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└───────────────────────────────────────────────┘
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┌───────────────────────────────────────────────┐
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│ matt-n/go-sqlite3 │
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└───────────────────────────────────────────────┘
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┌───────────────────────────────────────────────┐
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│ sqlite3.c │
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└───────────────────────────────────────────────┘
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9 years ago
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## Log Compaction
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rqlite automatically performs log compaction. After a fixed number of changes rqlite snapshots the SQLite database, and truncates the Raft log. This is a technical feature of the Raft consensus system, and most users of rqlite need not be concerned with this.
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