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Dev tools · alternatives · 2026

24 alternatives to Bucket4J

Rate-limiting based on token bucket algorithm for Java

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Bucket4J launched in 2021; newer entries below may have overtaken it.

  1. 1
    Rately▲175

    Take control of your API traffic with custom rate limits.

    2025 · its alternatives →

  2. 2NB
  3. 3

    Hi HN! I built a distributed rate limiter using the token bucket algorithm with Redis backing. Key highlights: • 50,000+ requests&#x2F;second throughput with <2ms P95 latency • Redis-backed distributed state for multi-instance deployments • 18 REST API endpoints for rate limiting, config, and monitoring • 265+ tests including load tests and integration tests • Docker&#x2F;Kubernetes ready with comprehensive documentation Built with Java 21 + Spring Boot. Perfect for protecting APIs, microservices, or SaaS platforms from abuse. The pain point I solved: existing solutions were either too…

    2025 · github.com · its alternatives →

  4. 4

    Develop APIs fast + automatically detect endpoints

    2025 · fastrequest.apidog.com · its alternatives →

  5. 5

    A simple API for rate limiting, caching, prioritization

    2024 · its alternatives →

  6. 6

    Golimit is Uber ringpop based distributed and decentralized rate limiter - myntra/golimit

    2018 · github.com · its alternatives →

  7. 7

    simple daemon for rate limit. Contribute to limitd/limitd development by creating an account on GitHub.

    2015 · github.com · its alternatives →

  8. 8

    Protect against DDoS and other types of abusive behavior

    2017 · cloudflare.com · its alternatives →

  9. 9

    Optimizer library for tail recursive calls in Java bytecode - Sipkab/jvm-tail-recursion

    2020 · github.com · its alternatives →

  10. 10

    Fast JSON encoder/decoder compatible with encoding/json for Go - goccy/go-json

    2021 · github.com · its alternatives →

  11. 11

    ⏰ Day.js 2kB immutable date-time library alternative to Moment.js with the same modern API - iamkun/dayjs

    2018 · github.com · its alternatives →

  12. 12

    Meta programming utilities for C++14. Merged in matt-42/lithium - matt-42/iod

    2014 · github.com · its alternatives →

  13. 13

    Efficient data fetching for your Javascript Applications - fed135/ha-store

    2018 · github.com · its alternatives →

  14. 14

    An open benchmark for AI agents that test APIs

    May 2026 · resources.kusho.ai · its alternatives →

  15. 15

    Avoid 429 error by limiting requests made per time frame

    2023 · ratelimit.org · its alternatives →

  16. 16

    A rate limiting package for Go to handle distributed workloads - 0verread/goralim

    2024 · github.com · its alternatives →

  17. 17

    Yehuda's start as a programmer and the spec for building API

    2016 · changelog.com · its alternatives →

  18. 18DB

    Background HTTP/2 provides two methods to prioritize streams (e.g. files being served). One method is called weight-based prioritizatio...

    2015 · blog.kazuhooku.com · its alternatives →

  19. 19

    A Go library that implements Consistent Hashing and Consistent Hashing With Bounded Loads. - lafikl/consistent

    2017 · github.com · its alternatives →

  20. 20RA
  21. 21RL

    Generative AI applications pose a unique challenge in production. They are computationally intensive and orders of magnitude slower than traditional data-intensive applications. Scaling these applications is further complicated by expensive hardware requirements and GPU shortages. Consequently, developers are scrambling to implement home-grown caching and rate-limiting solutions, which are error-prone and difficult to get right. FluxNinja Aperture delivers a production-grade experience with a purpose-built load management platform that provides rate & concurrency limiting, caching, and…

    2024 · fluxninja.com · its alternatives →

  22. 22
    AKM▲2

    Rate-limit aware smart API key scheduling

    Apr 2026 · amon20044.github.io · its alternatives →

  23. 23

    Api rate limitter and usage tracker

    2025 · its alternatives →

  24. 24AU

    I run 3mins.news (https:&#x2F;&#x2F;3mins.news), an AI news aggregator built entirely on Cloudflare Workers. The backend has 10+ cron triggers running every few minutes: RSS fetching, article clustering, LLM calls, email delivery. The problem: Workers Paid Plan has hard monthly limits (10M requests, 1M KV writes, 1M queue ops, etc.). There's no built-in "pause when you hit the limit", CF just starts billing overages. KV writes cost $5&#x2F;M over the cap, so a retry loop bug can get expensive fast. AWS has Budget Alerts, but those are passive notifications, by the time you read the email,…

    Mar 2026 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →