Shopify/semian

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:monkey: Resiliency toolkit for Ruby for failing fast

Stars: 1.5k
Forks: 88
Open beginner issues: 0
Indexed issues: 35
Avg merge: 3d 19h
Merged PRs (30d): 5

Dominant language: Ruby
License: MIT
Last GitHub push: Sep 7, 2026
Latest indexed: Sep 19, 2026
Contributing guide: No contributing guide
Code of conduct: Code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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35 open issues indexed

Prevent Rails from retrying / reconnecting after Semian rejects database access Open

Difficulty 4/5 3-5 days Newbie friendliness 45/100

Shopify/semian#1051 · Opened Sep 18, 2026
`Semian::Adapter`'s re-entrancy guard silently disables the circuit when the adapter is mixed into a shared object Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

Shopify/semian#1045 · Opened Aug 27, 2026
Redis adapter causes errors with Redis::Cluster due to monkey-patching Open

Difficulty 2/5 1-3 hours Newbie friendliness 64/100

Shopify/semian#1036 · Opened Mar 9, 2026
Release bot is creating unsigned commits Open

Shopify/semian#1001 · 1 comment · 1 assignee · Opened Jan 26, 2026
Testing `Simple::*` data structures to show non-thread-safe behaviour Open

Shopify/semian#756 · 1 assignee · Opened Sep 20, 2025
Semian equates semaphores not being available with fully disabling Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

Shopify/semian#718 · Opened Aug 26, 2025
`error_threshold_timeout_enabled` can open too aggressively Open

Shopify/semian#634 · 5 comments · 1 assignee · Opened Jun 3, 2025
Any plan for supports Faraday adapter? Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

Shopify/semian#526 · 2 reactions · Opened Jul 5, 2024
Update HTTP examples to handle 500 Open

documentation Semian

Difficulty 1/5 Under an hour Newbie friendliness 52/100

Shopify/semian#478 · Opened Feb 15, 2023
Automate create github release Open

Semian

Difficulty 3/5 1-2 days Newbie friendliness 35/100

Shopify/semian#476 · 2 comments · Opened Feb 15, 2023
Investigate possobility when resource is acquired Open

Semian

Difficulty 4/5 3-5 days Newbie friendliness 20/100

Shopify/semian#446 · Opened Nov 14, 2022
Extract bulkheading ENV settings to configuration part Open

Semian

Difficulty 3/5 1-2 days Newbie friendliness 25/100

Shopify/semian#442 · 2 comments · Opened Nov 11, 2022
Review tests to cover ActiveRecord problems Open

Difficulty 3/5 1-2 days Newbie friendliness 20/100

Shopify/semian#406 · Opened Sep 13, 2022
Random failed tests Open

help wanted Semian

Difficulty 4/5 3-5 days Newbie friendliness 25/100

Shopify/semian#401 · Opened Sep 12, 2022
Feature: support static config for Semian::NetHTTP and Semian::GRPC Open

help wanted Semian

Difficulty 3/5 1-2 days Newbie friendliness 55/100

Shopify/semian#350 · Opened Jun 20, 2022
Automate PR approving with AI Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Shopify/semian#334 · Opened May 28, 2022
Make TestResource#test_acquire_timeout_override work Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

Shopify/semian#329 · Opened May 23, 2022
Audit list of things that can raise ResolveError Open

Difficulty 4/5 3-5 days Newbie friendliness 30/100

Shopify/semian#249 · 1 comment · Opened Jul 4, 2019
Feature Request: Percentage Based Error Thresholds Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Shopify/semian#245 · 1 comment · 2 reactions · Opened Jul 2, 2019
Feature Request: Throttle half_open -> closed attempts Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

Shopify/semian#244 · Opened Jul 2, 2019
Configure Semian for Sidekiq Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

Shopify/semian#232 · 1 comment · Opened Jun 17, 2019
Disappearing semaphore array Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

Shopify/semian#224 · 2 comments · Opened May 27, 2019
Fault injection Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Shopify/semian#187 · 6 comments · Opened Jun 9, 2018
Travis is failing, unable to push a new build to RubyGems Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

Shopify/semian#169 · Opened Nov 2, 2017
How about disabling bulkhead by default? Open

Semian

Difficulty 4/5 3-5 days Newbie friendliness 38/100

Shopify/semian#166 · 3 comments · Opened Sep 6, 2017
Throw exception when protected resource deligate is nil. Open

Shopify/semian#159 · 1 assignee · Opened Jul 12, 2017
Exponential backoff Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Shopify/semian#146 · 2 comments · Opened May 29, 2017
Possible concurrency issues Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Shopify/semian#86 · 7 comments · Opened Aug 9, 2016
DNS over TCP adapter Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

Shopify/semian#55 · Opened Oct 9, 2015
Drop openssl dependency Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

Shopify/semian#53 · Opened Sep 22, 2015
How long did a worker block on getting a ticket? Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

Shopify/semian#52 · Opened Sep 22, 2015
Simulator Open

enhancement

Shopify/semian#49 · 1 comment · 1 assignee · Opened Sep 17, 2015
Proxy Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

Shopify/semian#44 · 4 comments · Opened Mar 22, 2015
Investigate a possible Memcached adapter. Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

Shopify/semian#29 · 9 comments · Opened Feb 20, 2015
Share circuit breaker between workers Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 25/100

Shopify/semian#27 · 1 comment · Opened Feb 19, 2015

Shopify/semian

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