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path: root/modules/caddyhttp/reverseproxy/selectionpolicies.go
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2023-06-20reverseproxy: weighted_round_robin load balancing policy (#5579)Saber Haj Rabiee
* added weighted round robin algorithm to load balancer * added an adapt integration test for wrr and fixed a typo * changed args format to Caddyfile args convention * added provisioner and validator for wrr * simplified the code and improved doc
2023-05-05reverseproxy: Optimize base case for least_conn and random_choose policies ↵Francis Lavoie
(#5487) When only a single request has the least amount of requests, there's no need to compute a random number, because the modulo of 1 will always be 0 anyways.
2023-05-05reverseproxy: Add `fallback` for some policies, instead of always random (#5488)Francis Lavoie
2023-04-04reverseproxy: Add `query` and `client_ip_hash` lb policies (#5468)Francis Lavoie
2022-12-05reverseproxy: Improve hostByHashing distribution (#5229)Alban Lecocq
* If upstreams are all using same host but with different ports ie: foobar:4001 foobar:4002 foobar:4003 ... Because fnv-1a has not a good enough avalanche effect Then the hostByHashing result is not well balanced over all upstreams As last byte FNV input tend to affect few bits, the idea is to change the concatenation order between the key and the upstream strings So the upstream last byte have more impact on hash diffusion
2022-11-14reverseproxy: Mask the WS close message when we're the client (#5199)Francis Lavoie
* reverseproxy: Mask the WS close message when we're the client * weakrand * Bump golangci-lint version so path ignores work on Windows * gofmt * ugh, gofmt everything, I guess
2022-07-28Ignore linter warningsMatthew Holt
Use of non-cryptographic random numbers in the load balancing is intentional.
2022-04-27reverseproxy: Improve hashing LB policies with HRW (#4724)Matt Holt
* reverseproxy: Improve hashing LB policies with HRW Previously, if a list of upstreams changed, hash-based LB policies would be greatly affected because the hash relied on the position of upstreams in the pool. Highest Random Weight or "rendezvous" hashing is apparently robust to pool changes. It runs in O(n) instead of O(log n), but n is very small usually. * Fix bug and update tests
2021-04-29reverseproxy: fix hash selection policy (#4137)Simão Gomes Viana
* caddyhttp: reverseproxy: fix hash selection policy Fixes: #4135 Test: go test './...' -count=1 * caddyhttp: reverseproxy: add test to catch #4135 If you revert the last commit, the test will fail.
2021-03-30reverseproxy: Set cookie path to `/` when using cookie lb_policy (#4096)Dimitri Masson
2021-02-25reverseproxy: Fix round robin data race (#4038)Matthew Holt
2020-12-14reverseproxy: Minor lint fixesMatthew Holt
2020-11-22ci: Use golangci's github action for linting (#3794)Dave Henderson
* ci: Use golangci's github action for linting Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix most of the staticcheck lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the prealloc lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the misspell lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the varcheck lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the errcheck lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the bodyclose lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the deadcode lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the unused lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the gosec lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the gosimple lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the ineffassign lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Fix the staticcheck lint errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Revert the misspell change, use a neutral English Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Remove broken golangci-lint CI job Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Re-add errantly-removed weakrand initialization Signed-off-by: Dave Henderson <dhenderson@gmail.com> * don't break the loop and return * Removing extra handling for null rootKey * unignore RegisterModule/RegisterAdapter Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com> * single-line log message Co-authored-by: Matt Holt <mholt@users.noreply.github.com> * Fix lint after a1808b0dbf209c615e438a496d257ce5e3acdce2 was merged Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Revert ticker change, ignore it instead Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Ignore some of the write errors Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Remove blank line Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Use lifetime Signed-off-by: Dave Henderson <dhenderson@gmail.com> * close immediately Co-authored-by: Matt Holt <mholt@users.noreply.github.com> * Preallocate configVals Signed-off-by: Dave Henderson <dhenderson@gmail.com> * Update modules/caddytls/distributedstek/distributedstek.go Co-authored-by: Mohammed Al Sahaf <msaa1990@gmail.com> Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
2020-11-20reverseproxy: Implement cookie hash selection policy (#3809)Dimitri Masson
* add CookieHashSelection for session affinity * add CookieHashSelection for session affinity * register module * reverse_proxy: Add and fix cookie lb_policy * reverse_proxy: Manage hmac.write error on cookie hash selection * reverse_proxy: fix some comments * reverse_proxy: variable `cookieValue` is inside the else block * reverse_proxy: Abstract duplicate nuanced logic of reservoir sampling into a function * reverse_proxy: Set a default secret is indeed useless * reverse_proxy: add configuration syntax for cookie lb_policy * reverse_proxy: doc typo and improvement Co-authored-by: utick <123liuqingdong@163.com>
2020-11-16reverse_proxy: Fix random_choose selection policy (#3811)Dimitri Masson
2020-08-17reverseproxy: Support header selection policy on `Host` field (#3653)Francis Lavoie
2020-07-31admin,templates,core: Minor enhancements and error handling (#3607)Bart
* fix 2 possible bugs * handle unhandled errors
2020-04-07core: Rename ParsedAddress -> NetworkAddressMatthew Holt
2020-04-06caddyhttp: Add missing LB policy Caddyfile unmarshalers (#3230)Francis Lavoie
2020-01-18reverse_proxy: CB docs; rename type -> factor (#2986)Mohammed Al Sahaf
* v2: add documentation for circuit breaker config and "random selection" load balancing policy * v2: rename circuit breaker config inline key from `type` to `breaker` to avoid json key clash between the `circuit_breaker` type and the `type` field of the generic circuit breaker Config struct used by circuit breaking implementations * v2: restore the circuit breaker inline key to `type` and rename the name circuit breaker config field from `Type` to `Factor`
2019-12-10v2: Module documentation; refactor LoadModule(); new caddy struct tags (#2924)Matt Holt
This commit goes a long way toward making automated documentation of Caddy config and Caddy modules possible. It's a broad, sweeping change, but mostly internal. It allows us to automatically generate docs for all Caddy modules (including future third-party ones) and make them viewable on a web page; it also doubles as godoc comments. As such, this commit makes significant progress in migrating the docs from our temporary wiki page toward our new website which is still under construction. With this change, all host modules will use ctx.LoadModule() and pass in both the struct pointer and the field name as a string. This allows the reflect package to read the struct tag from that field so that it can get the necessary information like the module namespace and the inline key. This has the nice side-effect of unifying the code and documentation. It also simplifies module loading, and handles several variations on field types for raw module fields (i.e. variations on json.RawMessage, such as arrays and maps). I also renamed ModuleInfo.Name -> ModuleInfo.ID, to make it clear that the ID is the "full name" which includes both the module namespace and the name. This clarity is helpful when describing module hierarchy. As of this change, Caddy modules are no longer an experimental design. I think the architecture is good enough to go forward.
2019-11-18reverse_proxy: Fix invalid argument to Intn in RandomChoice selectionMatthew Holt
2019-11-04reverse_proxy: Add UnmarshalCaddyfile for random_choose selection policyMatthew Holt
Also allow caddy.Duration to be given integer values which are treated like regular time.Duration values (nanoseconds). Fixes #2856
2019-09-09Migrate some selection policy tests over to v2Matthew Holt
2019-09-03Some cleanup and godocMatthew Holt
2019-09-02reverse_proxy: WIP refactor and support for FastCGIMatthew Holt
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