NBS is stable enough that we've made it the default store for command
line tools, and the go-to store for tests that require temporary, but
persistent, storage.
We intend to remove support for LevelDB-backed chunk storage
completely ASAP. This patch removes all usage of LevelDBStore from
noms.git, but doesn't remove LevelDBStore _just_ yet as there are
still some dependencies on it elsewhere.
Toward #3127
The new spec is a URI, akin to what we use for HTTP It allows the
specification of a DynamoDB table, an S3 bucket, a database ID, and a
dataset ID: aws://table-name:bucket-name/database::dataset
The bucket name is optional and, if not provided, Noms will use a
ChunkStore implementation backed only by DynamoDB.
This lets you do foo.bar@at(n) to get the nth element of a list, set, or
map (for lists, this is equivalent to foo.bar[n]). This patch also adds
support for negative indices to @at(-n) and [-n] to get the nth element
relative to the back of collections.
Aaron Boodman