golb

module

v0.0.0-...-2b4093a Latest Latest Go to latest Published: Nov 20, 2019 License: MIT

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Valid go.mod file

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Repository

github.com/onestraw/golb

Links

Open Source Insights

README ¶

Go LB

Yet another load balancer golb

Features

roundrobin: smooth weighted roundrobin method
chash: cosistent hashing method
balancer: multiple LB instances, passive health check, SSL offloading
controller: dynamic configuration, REST API to start/stop/add/remove LB at runtime
service discovery: autodiscover backend services with etcd or consul
statistics: HTTP method/path/code/bytes
conf: yaml and json configuration

Examples

LICENSE

MIT License

Directories ¶

Path	Synopsis
balancer
chash Package chash provides consistent hash balancing "Consistent hashing can guarantee that when a cache machine is removed, only the objects cached in it will be rehashed; when a new cache machine is added, only a fairly few objects will be rehashed." https://www.codeproject.com/Articles/56138/Consistent-hashing consistent hashing with bounded loads https://research.googleblog.com/2017/04/consistent-hashing-with-bounded-loads.html	Package chash provides consistent hash balancing "Consistent hashing can guarantee that when a cache machine is removed, only the objects cached in it will be rehashed; when a new cache machine is added, only a fairly few objects will be rehashed." https://www.codeproject.com/Articles/56138/Consistent-hashing consistent hashing with bounded loads https://research.googleblog.com/2017/04/consistent-hashing-with-bounded-loads.html
cmd
golb
config
controller Package controller provides REST API to configure balancer controller API - Authentication Basic HTTP Auth - Stats GET http://{controller_address}/stats - List All LB instance GET http://{controller_address}/vs - Add LB instance POST http://{controller_address}/vs Body {"name":"redis","address":"127.0.0.1:6379"} Example: curl -XPOST -u admin:admin -H 'content-type: application/json' -d '{"name":"redis","address":"127.0.0.1:6379"}' http://127.0.0.1:6587/vs - Enable LB instance POST http://{controller_address}/vs/{name} Body {"action":"enable"} - Disable LB instance POST http://{controller_address}/vs/{name} Body {"action":"disable"} - List pool member of LB instance GET http://{controller_address}/vs/{name} - Add pool member to LB instance POST http://{controller_address}/vs/{name}/pool Body: {"address":"127.0.0.1:10003","weight":2} Example: curl -XPOST -u admin:admin -H 'content-type: application/json' -d '{"address":"127.0.0.1:10003"}' http://127.0.0.1:6587/vs/web/pool - Remove pool member from LB instance DELETE http://{controller_address}/vs/{name}/pool Body: {"address":"127.0.0.1:10002"} Example: curl -XDELETE -u admin:admin -H 'content-type: application/json' -d '{"address":"127.0.0.1:10002"}' http://127.0.0.1:6587/vs/web/pool	Package controller provides REST API to configure balancer controller API - Authentication Basic HTTP Auth - Stats GET http://{controller_address}/stats - List All LB instance GET http://{controller_address}/vs - Add LB instance POST http://{controller_address}/vs Body {"name":"redis","address":"127.0.0.1:6379"} Example: curl -XPOST -u admin:admin -H 'content-type: application/json' -d '{"name":"redis","address":"127.0.0.1:6379"}' http://127.0.0.1:6587/vs - Enable LB instance POST http://{controller_address}/vs/{name} Body {"action":"enable"} - Disable LB instance POST http://{controller_address}/vs/{name} Body {"action":"disable"} - List pool member of LB instance GET http://{controller_address}/vs/{name} - Add pool member to LB instance POST http://{controller_address}/vs/{name}/pool Body: {"address":"127.0.0.1:10003","weight":2} Example: curl -XPOST -u admin:admin -H 'content-type: application/json' -d '{"address":"127.0.0.1:10003"}' http://127.0.0.1:6587/vs/web/pool - Remove pool member from LB instance DELETE http://{controller_address}/vs/{name}/pool Body: {"address":"127.0.0.1:10002"} Example: curl -XDELETE -u admin:admin -H 'content-type: application/json' -d '{"address":"127.0.0.1:10002"}' http://127.0.0.1:6587/vs/web/pool
discovery
consul
etcd
examples
consul
consul/client
etcd
retry
roundrobin Package roundrobin provides smooth weighted round-robin balancing > For edge case weights like { 5, 1, 1 } we now produce { a, a, b, a, c, a, a } > sequence instead of { c, b, a, a, a, a, a } produced previously.	Package roundrobin provides smooth weighted round-robin balancing > For edge case weights like { 5, 1, 1 } we now produce { a, a, b, a, c, a, a } > sequence instead of { c, b, a, a, a, a, a } produced previously.
service
stats

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