--- title: What made async code hard to maintain over time? | daily.dev description: Mixing asynchronous programming styles (callbacks, tasks, promises) with implicit timing assumptions led to maintenance issues and race conditions. The... canonical: https://daily.dev/posts/what-made-async-code-hard-to-maintain-over-time--9znstlnnv twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: What made async code hard to maintain over time? | daily.dev og:description: Mixing asynchronous programming styles (callbacks, tasks, promises) with implicit timing assumptions led to maintenance issues and race conditions. The... og:url: https://daily.dev/posts/what-made-async-code-hard-to-maintain-over-time--9znstlnnv og:image: https://api.daily.dev/og/posts/9znSTlNNv.png og:image:alt: What made async code hard to maintain over time? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # What made async code hard to maintain over time? **[Rebeloper](https://daily.dev/sources/rebeloper)** · 1 min read · 0 upvotes · 0 comments ## Summary Mixing asynchronous programming styles (callbacks, tasks, promises) with implicit timing assumptions led to maintenance issues and race conditions. The solution involved standardizing on explicit sequencing with a single entry/exit point pattern and consistent await usage, eliminating implicit ordering assumptions that caused intermittent failures. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [What Async Promised and What it Delivered — Causality](https://daily.dev/posts/what-async-promised-and-what-it-delivered-causality-ocp1tkuw6) · Hacker News · 17 upvotes · 6 comments - [The Async Mistake That Makes JavaScript Code Lie to You](https://daily.dev/posts/the-async-mistake-that-makes-javascript-code-lie-to-you-b9d5ujlbf) · Medium · 4 upvotes · 0 comments - [The quiet problem with unnecessary async](https://daily.dev/posts/the-quiet-problem-with-unnecessary-async-6fhremtom) · Matt Smith · 49 upvotes · 9 comments --- Tags: [#architecture](https://daily.dev/tags/architecture) [View this post on daily.dev](https://daily.dev/posts/what-made-async-code-hard-to-maintain-over-time--9znstlnnv) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"What made async code hard to maintain over time?","url":"https://daily.dev/posts/what-made-async-code-hard-to-maintain-over-time--9znstlnnv","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/what-made-async-code-hard-to-maintain-over-time--9znstlnnv"},"datePublished":"2026-02-05T17:43:42.975Z","dateModified":"2026-02-05T17:43:58.334Z","description":"Mixing asynchronous programming styles (callbacks, tasks, promises) with implicit timing assumptions led to maintenance issues and race conditions. 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