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README

Grafana Dskit

This library contains utilities that are useful for building distributed services, including: - Exponential backoff for retries. - A common cache API and Memcached implementation. - Hedging, sending extra duplicate requests to improve the chance that one succeeds. - A common key-value API, implemented for Consul, Etcd and Memberlist. - RPC middlewares, for metrics, logging, etc. - A services model, to manage start-up and shut-down.

Current state

This library is used at scale in production at Grafana Labs. A number of packages were collected here from database-related projects:

Go version compatibility

This library aims to support at least the two latest Go minor releases.

Contributing

If you're interested in contributing to this project:

Start by reading the Contributing guide.
Pull request titles must follow Conventional Commits format.

Release History

This project uses conventional commit messages to maintain a clear history of changes. No separate changelog is maintained - please refer to the commit history for information about releases and changes.

License

Apache 2.0 License

Extension points exported contracts — how you extend this code

Cache (Interface)

Cache is a high level interface to interact with a cache. [7 implementers]

Interface (Interface)

Interface is the shared contract for all middlesware, and allows middlesware to wrap handlers. [8 implementers]

middleware/middleware.go

HTTPConnectionTTLMiddleware (Interface)

HTTPConnectionTTLMiddleware is an HTTP middleware that limits the maximum lifetime of TCP connections. [13 implementers]

middleware/http_connection_ttl_middleware.go

Registerer (Interface)

Registerer is a thing that can RegisterFlags [13 implementers]

flagext/register.go

SignalReceiver (Interface)

SignalReceiver represents a subsystem/server/... that can be stopped or queried about the status with a signal [13 implementers]

signals/signals.go

Sizer (Interface)

Sizer can return its size in bytes. [17 implementers]

grpcutil/metadata.go

AddressProvider (Interface)

AddressProvider performs node address resolution given a list of clusters. [5 implementers]

cache/memcached_client.go

Codec (Interface)

Codec allows KV clients to serialise and deserialise values. [5 implementers]

kv/codec/codec.go

Core symbols most depended-on inside this repo

server/server.go

ring/ownership_priority_queue.go

ring/token_generator.go

tenant/metadata.go

StopAndAwaitTerminated

services/services.go

StartAndAwaitRunning

services/services.go

Shape

Method 1,957

Function 1,639

Struct 411

Interface 70

TypeAlias 54

FuncType 28

Languages

Go100%

Modules by API surface

kv/memberlist/memberlist_client_test.go96 symbols

server/fake_server.pb.go87 symbols

ring/ring.go82 symbols

metrics/tenant_registries.go80 symbols

httpgrpc/httpgrpc.pb.go78 symbols

ring/partition_ring_desc.pb.go75 symbols

ring/ring_test.go73 symbols

kv/memberlist/memberlist_client.go71 symbols

ring/replication_set_tracker.go57 symbols

ring/ring.pb.go55 symbols

cache/memcached_client.go51 symbols

ring/model.go50 symbols

Used by 3 indexed graphs manifest dependencies, hub-wide

github.com/grafana/grafana

github.com/grafana/loki

github.com/grafana/tempo

Dependencies from manifests, versioned

github.com/HdrHistogram/hdrhistogram-gov1.2.0 · 1×

github.com/alecthomas/unitsv0.0.0-2024092700094 · 1×

github.com/armon/go-metricsv0.4.1 · 1×

github.com/beorn7/perksv1.0.1 · 1×

github.com/cenkalti/backoff/v5v5.0.3 · 1×

github.com/cespare/xxhash/v2v2.3.0 · 1×

github.com/coreos/go-semverv0.3.1 · 1×

github.com/coreos/go-systemd/v22v22.6.0 · 1×

github.com/cristalhq/hedgedhttpv0.9.1 · 1×

github.com/davecgh/go-spewv1.1.2-0.20180830191 · 1×

github.com/facette/natsortv0.0.0-2018121007275 · 1×

github.com/fatih/colorv1.16.0 · 1×

For agents

$ claude mcp add dskit \
  -- python -m otcore.mcp_server <graph>

⬇ download graph artifact