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Update README.md

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Aaron Boodman
2017-02-23 22:44:51 -08:00
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@@ -6,11 +6,11 @@ A horizontally-scalable storage backend for Noms.
NBS is a storage layer optimized for the needs of the [Noms](https://github.com/attic-labs/noms) database.
NBS can run in two configurations: either backed by local disk, or backed by Amazon S3.
NBS can run in two configurations: either backed by local disk, or backed by Amazon AWS.
When backed by local disk, NBS is significantly faster than LevelDB for our workloads and supports full multiprocess concurrency.
When backed by S3, NBS makes Noms "[effectively CA](https://research.google.com/pubs/pub45855.html)": Noms is always consistent, and this configuration makes Noms as available as S3. It also means Noms has the cost profile of object storage with power closer to that of a traditional database.
When backed by AWS, NBS stores its data mainly in S3, along with a single 4KB DynamoDB item. This configuration makes Noms "[effectively CA](https://research.google.com/pubs/pub45855.html)", in the sense that Noms is always consistent, and Noms+NBS is as available as DynamoDB and S3 are. This configuration also gives Noms the cost profile of object storage with power closer to that of a traditional database.
## Details