Consul is a distributed, highly available, and data center aware solution to connect and configure applications across dynamic, distributed infrastructure.

consul api-gateway kubernetes ecs service-discovery service-mesh vault

Tree: 0b5a078b95

Paul Banks 0b5a078b95 Optimize health watching to single chan/goroutine. (#5449 ) Refs #4984. Watching chans for every node we touch in a health query is wasteful. In #4984 it shows that if there are more than 682 service instances we always fallback to watching all services which kills performance. We already have a record in MemDB that is reliably update whenever the service health result should change thanks to per-service watch indexes. So in general, provided there is at least one service instances and we actually have a service index for it (we always do now) we only ever need to watch a single channel. This saves us from ever falling back to the general index and causing the performance cliff in #4984, but it also means fewer goroutines and work done for every blocking health query. It also saves some allocations made during the query because we no longer have to populate a WatchSet with 3 chans per service instance which saves the internal map allocation. This passes all state store tests except the one that explicitly checked for the fallback behaviour we've now optimized away and in general seems safe.		6 years ago
.circleci	refactor circleci config to 2.0	6 years ago
.github	Remove consul-docs automatic PR review (#5306 )	6 years ago
acl	New ACLs (#4791 )	6 years ago
agent	Optimize health watching to single chan/goroutine. (#5449 )	6 years ago
api	fix typos reported by golangci-lint:misspell (#5434 )	6 years ago
bench	Gets benchmarks running again and does a rough pass for 0.7.1.	8 years ago
build-support	build: fix 'make ui' scripts so that it can handle versions like "v1.4.0-rc1-55-g2c8675565-rc1 (`2c8675565`)" (#4920 )	6 years ago
command	fix typos	6 years ago
connect	fix typos reported by golangci-lint:misspell (#5434 )	6 years ago
demo	demo: Added udp port forwarding	7 years ago
ipaddr	New config parser, HCL support, multiple bind addrs (#3480 )	7 years ago
lib	fix typos reported by golangci-lint:misspell (#5434 )	6 years ago
logger	fix typos reported by golangci-lint:misspell (#5434 )	6 years ago
sentinel	Renames stubs to be more consistent.	7 years ago
service_os	Changes made :	6 years ago
snapshot	snapshot: read meta.json correctly. (#5193 )	6 years ago
terraform	terraform: fix formatting of consul.tf (#4580 )	6 years ago
test	snapshot: read meta.json correctly. (#5193 )	6 years ago
testrpc	speed up TestHTTPAPI_MethodNotAllowed_OSS from 11s -> 0.5s (#5268 )	6 years ago
testutil	testutil: Set the environment variable NOLOGBUFFER=1 to have test agent logs go straight to stdout	6 years ago
tlsutil	agent: enable reloading of tls config (#5419 )	6 years ago
types	Removes remoteConsuls in favor of the new router.	8 years ago
ui	update ffi to dodge CVE-2018-1000201 (#4670 )	6 years ago
ui-v2	ui: Custom version of ember-block-slots compatible with ember 3 (#5245 )	6 years ago
vendor	acl: reduce complexity of token resolution process with alternative singleflighting (#5480 )	6 years ago
version	Putting source back into Dev Mode	6 years ago
watch	fix typos reported by golangci-lint:misspell (#5434 )	6 years ago
website	Docs Proofing (#5424 )	6 years ago
.dockerignore	Update the scripting	7 years ago
.gitignore	merge feedback: fix typos; actually use deliverLatest added previously but not plumbed in	6 years ago
.travis.yml	travis: enable branch builds for f-acl-ux and stop doing them for f-envoy	6 years ago
CHANGELOG.md	Update CHANGELOG.md	6 years ago
GNUmakefile	CA Provider Plugins (#4751 )	6 years ago
INTERNALS.md	docs: correct link to top level agent package (#4750 )	6 years ago
LICENSE	…
NOTICE.md	add copyright notice file	6 years ago
README.md	Contribution guide (#4704 )	6 years ago
Vagrantfile	Adds a basic Linux Vagrant setup, stolen from Nomad.	7 years ago
main.go	Added Side Effect import for Windows Service	7 years ago
main_test.go	…

README.md

Consul

Website: https://www.consul.io
Chat: Gitter
Mailing list: Google Groups

Consul is a tool for service discovery and configuration. Consul is distributed, highly available, and extremely scalable.

Consul provides several key features:

Service Discovery - Consul makes it simple for services to register themselves and to discover other services via a DNS or HTTP interface. External services such as SaaS providers can be registered as well.
Health Checking - Health Checking enables Consul to quickly alert operators about any issues in a cluster. The integration with service discovery prevents routing traffic to unhealthy hosts and enables service level circuit breakers.
Key/Value Storage - A flexible key/value store enables storing dynamic configuration, feature flagging, coordination, leader election and more. The simple HTTP API makes it easy to use anywhere.
Multi-Datacenter - Consul is built to be datacenter aware, and can support any number of regions without complex configuration.
Service Segmentation - Consul Connect enables secure service-to-service communication with automatic TLS encryption and identity-based authorization.

Consul runs on Linux, Mac OS X, FreeBSD, Solaris, and Windows. A commercial version called Consul Enterprise is also available.

Please note: We take Consul's security and our users' trust very seriously. If you believe you have found a security issue in Consul, please responsibly disclose by contacting us at security@hashicorp.com.

Quick Start

An extensive quick start is viewable on the Consul website:

https://www.consul.io/intro/getting-started/install.html

Documentation

Full, comprehensive documentation is viewable on the Consul website:

https://www.consul.io/docs

Contributing

Thank you for your interest in contributing! Please refer to CONTRIBUTING.md for guidance.