{"id":16750102,"url":"https://github.com/alexferl/justbackoff","last_synced_at":"2025-08-01T15:42:36.636Z","repository":{"id":62573476,"uuid":"59708068","full_name":"alexferl/justbackoff","owner":"alexferl","description":"Simple backoff algorithm in Python","archived":false,"fork":false,"pushed_at":"2024-05-07T03:27:16.000Z","size":27,"stargazers_count":4,"open_issues_count":0,"forks_count":1,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-03-24T12:56:16.588Z","etag":null,"topics":["backoff","backoff-algorithm","exponential-backoff"],"latest_commit_sha":null,"homepage":"","language":"Python","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/alexferl.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2016-05-26T00:52:20.000Z","updated_at":"2024-11-11T11:05:57.000Z","dependencies_parsed_at":"2022-11-03T16:00:58.563Z","dependency_job_id":null,"html_url":"https://github.com/alexferl/justbackoff","commit_stats":null,"previous_names":["admiralobvious/justbackoff"],"tags_count":5,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/alexferl%2Fjustbackoff","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/alexferl%2Fjustbackoff/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/alexferl%2Fjustbackoff/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/alexferl%2Fjustbackoff/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/alexferl","download_url":"https://codeload.github.com/alexferl/justbackoff/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":248232482,"owners_count":21069487,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["backoff","backoff-algorithm","exponential-backoff"],"created_at":"2024-10-13T02:27:04.020Z","updated_at":"2025-04-10T14:11:44.594Z","avatar_url":"https://github.com/alexferl.png","language":"Python","funding_links":[],"categories":[],"sub_categories":[],"readme":"# justbackoff [![Build Status](https://travis-ci.com/alexferl/justbackoff.svg?branch=master)](https://travis-ci.com/alexferl/justbackoff) [![codecov](https://codecov.io/gh/alexferl/justbackoff/branch/master/graph/badge.svg)](https://codecov.io/gh/alexferl/justbackoff)\n\nA simple backoff algorithm for Python 3.7+.\n\n\n### Install\n\n```shell script\n$ pip install justbackoff\n```\n\n### Usage\n\nBackoff is a counter. It starts at `min_ms`. After every call to `duration()`,\nit is multiplied by `factor`. It is capped at `max_ms`.\nIt returns to `min_ms` on every call to `reset()`.\n`jitter` adds randomness ([see below](#example-using-jitter)).\n\n---\n\n#### Simple example\n\n``` python\nfrom justbackoff import Backoff\n\nb = Backoff(min_ms=100, max_ms=10000, factor=2, jitter=False)\n\nprint(b.duration())\nprint(b.duration())\nprint(b.duration())\n\nprint(\"Reset!\")\nb.reset()\n\nprint(b.duration())\n\n```\n\n``` shell script\n0.1\n0.2\n0.4\nReset!\n0.1\n```\n\n---\n\n#### Example using `socket` package\n\n``` python\nimport socket\nimport time\n\nfrom justbackoff import Backoff\n\n\nsock = socket.socket()\nb = Backoff()\n\nwhile True:\n    try:\n        sock.connect((\"127.0.0.1\", 1337))\n    except Exception as e:\n        d = b.duration()\n        print(\"{}, reconnecting in {} seconds\".format(e, d))\n        time.sleep(d)\n        continue\n\n    b.reset()\n    sock.send(\"Hello, world!\")\n    sock.close()\n\n```\n\n---\n\n#### Example using `jitter`\n\nEnabling `jitter` adds some randomization to the backoff durations.\n[See Amazon's writeup of performance gains using jitter](http://www.awsarchitectureblog.com/2015/03/backoff.html).\nSeeding is not necessary but doing so gives repeatable results.\n\n```python\nimport random\n\nfrom justbackoff import Backoff\n\nb = Backoff(min_ms=100, max_ms=10000, factor=2, jitter=True)\n\nrandom.seed(42)\n\nprint(b.duration())\nprint(b.duration())\nprint(b.duration())\n\nprint(\"Reset!\")\nb.reset()\n\nprint(b.duration())\nprint(b.duration())\nprint(b.duration())\n```\n\n``` shell script\n0.1\n0.102501075522\n0.182508795511\nReset!\n0.1\n0.173647121416\n0.303009846227\n```\n\n#### Credits\n\nPorted from Go [backoff](https://github.com/jpillora/backoff)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Falexferl%2Fjustbackoff","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Falexferl%2Fjustbackoff","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Falexferl%2Fjustbackoff/lists"}