v0.5.0

New Features

Get() operation with floor/ceiling comparison

It's now possible to do a Get() request for a key that is floor (<=), ceiling (>=), lower (<) or higher >.

eg.:

key, value, version, err := client.Get(ctx, "my-key", ComparisonFloor())

Partition Key

A PartitionKey can be specified in all the operations. When a partition key is set, the shard routing mechanism will be based on it instead of using the record key.

eg.:

key1, v1, err := client.Put(ctx, "key-1", []byte("1"), PartitionKey("x"))
key2, v2, err := client.Put(ctx, "key-2", []byte("1"), PartitionKey("x"))
key2, v2, err := client.Put(ctx, "key-3", []byte("1"), PartitionKey("x"))

All these record are going to be stored on the same shard, even though they have different keys.

Operations such as Get() with floor/ceiling match, List() and RangeScan() become more efficient when a PartitionKey() option is set, since they only need to operate on a single shard.

Sequential Keys

Oxia can help generating unique and monotonically increasing keys composed on an arbitrary number of sequences.

key1, v1, err := client.Put(ctx, "a", []byte("0"), SequenceKeysDeltas(1), PartitionKey("x"))
// key1 -> a-00000000000000000001
key2, v2, err := client.Put(ctx, "a", []byte("0"), SequenceKeysDeltas(5), PartitionKey("x"))
// key2 -> a-00000000000000000006

RangeScan

RangeScan() is similar to List(), though it allows to efficiently iterate over a large set of records

Reading Coordinator configuration from config map

When running in Kubernetes, the Oxia coordinator can read the configuration directly from a config map. This will allow to get instant notifications of changes to the configuration and to get them applied immediately.

What's Changed

• improve oxia coordinatior status configmap by @labuladong in #456
• Upgrade to OTel 1.26 by @merlimat in #457
• Switch CI to Go 1.22 by @merlimat in #458
• Upgrade K8S client API lib by @merlimat in #459
• Fixed Trivy scan severity config by @merlimat in #460
• Watch config changes by @labuladong in #462
• Upgrade to protovt 0.6 by @merlimat in #463
• Bump google.golang.org/grpc from 1.58.2 to 1.58.3 by @dependabot in #464
• Ensure notification channel is always closed before client.Close() returns by @merlimat in #466
• Added support for Get() with ComparisonType in Db abstraction by @merlimat in #465
• Server side handling of floor/ceiling get requests by @merlimat in #467
• doc: add file type to avoid confusing by @mattisonchao in #468
• Added client side implementation of ceiling/floor get queries by @merlimat in #469
• Added partition-key to override shard routing by @merlimat in #470
• Only watch config file when running coordinator by @merlimat in #471
• Support sequential write operation on server dbs by @merlimat in #472
• Support sequential keys in client SDK by @merlimat in #474
• Hide internal keys in CLI listing by @merlimat in #475
• Refactored CLI client by @merlimat in #476
• Added CLI options for partition-key, comparison type and sequence keys by @merlimat in #477
• Added delete-range CLI command by @merlimat in #478
• Added range-scan support in oxia db by @merlimat in #479
• Added range-scan support in public RPC by @merlimat in #480
• Implemented range-scan in client API by @merlimat in #481
• Update Busybox to fix CVE-2023-42366 by @merlimat in #482
• Support range-scan in CLI by @merlimat in #483
• Allower to read cluster config directly from the k8s config-map by @merlimat in #484

Full Changelog: v0.4.0...v0.5.0