--- title: I thought this feature would be easy to deploy... I was... description: A developer building Kiru, a Rust-based video editor, shares the challenges of deploying a parallel audio alignment pipeline to production. The alignment step... canonical: https://daily.dev/posts/i-thought-this-feature-would-be-easy-to-deploy-i-was-wrong--mv3wt9hb7 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: I thought this feature would be easy to deploy... I was wrong. | daily.dev og:description: A developer building Kiru, a Rust-based video editor, shares the challenges of deploying a parallel audio alignment pipeline to production. The alignment step... og:url: https://daily.dev/posts/i-thought-this-feature-would-be-easy-to-deploy-i-was-wrong--mv3wt9hb7 og:image: https://api.daily.dev/og/posts/Mv3Wt9hb7.png og:image:alt: I thought this feature would be easy to deploy... I was wrong. 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. # I thought this feature would be easy to deploy... I was wrong. **[Dreams of Code](https://daily.dev/sources/dreamsofcode)** · 20 min read · 39 upvotes · 1 comments ## Summary A developer building Kiru, a Rust-based video editor, shares the challenges of deploying a parallel audio alignment pipeline to production. The alignment step takes ~20 seconds per 2-minute chunk, so the plan was to split audio into chunks and process them concurrently on AWS Lambda. Cold starts proved problematic due to a 30-second model initialization cost. After failed attempts with Lambda pre-warming and provisioned concurrency (which took 3 minutes to provision), the solution shifted to AWS ECS with Fargate. Docker image size was reduced from 1.4 GB to 503 MB using multi-stage builds and pruning, then further optimized with gzip compression and SOCI (Seekable OCI) image acceleration via a GitHub Actions workflow. Final startup time reached ~1 minute. A hybrid approach was adopted: 3 always-on Fargate Spot instances (~$30/month) handle short files, while on-demand scaling covers the rest using a pre-signed S3 URL request as a predictive scaling signal. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Community discussion Top comments from developers on daily.dev. **@qwertydiy** · 1 upvotes > An actually good use of ozempic ## Similar posts on daily.dev - [How to Build a Serverless RAG Pipeline on AWS That Scales to Zero](https://daily.dev/posts/how-to-build-a-serverless-rag-pipeline-on-aws-that-scales-to-zero-ahy4ukgbk) · freeCodeCamp · 1 upvotes · 0 comments - [Cut GPU inference cold start from 8 minutes to less than a minute](https://daily.dev/posts/cut-gpu-inference-cold-start-from-8-minutes-to-less-than-a-minute-vhoj8trdz) · The New Stack · 0 upvotes · 0 comments --- Tags: [#aws](https://daily.dev/tags/aws), [#docker](https://daily.dev/tags/docker), [#rust](https://daily.dev/tags/rust), [#aws-lambda](https://daily.dev/tags/aws-lambda) [View this post on daily.dev](https://daily.dev/posts/i-thought-this-feature-would-be-easy-to-deploy-i-was-wrong--mv3wt9hb7) ```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":"I thought this feature would be easy to deploy... 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