--- title: How to Build Systems That Stay Online When Everything... description: Systems most often fail during peak demand moments like product launches, live events, or ticket drops — exactly when failure is most costly. The core causes... canonical: https://daily.dev/posts/how-to-build-systems-that-stay-online-when-everything-spikes--camjar-djoweini-qa0jkemlo twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: How to Build Systems That Stay Online When Everything Spikes- Camjar Djoweini | daily.dev og:description: Systems most often fail during peak demand moments like product launches, live events, or ticket drops — exactly when failure is most costly. The core causes... og:url: https://daily.dev/posts/how-to-build-systems-that-stay-online-when-everything-spikes--camjar-djoweini-qa0jkemlo og:image: https://api.daily.dev/og/posts/QA0JKemLo.png og:image:alt: How to Build Systems That Stay Online When Everything Spikes- Camjar Djoweini 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. # How to Build Systems That Stay Online When Everything Spikes- Camjar Djoweini **[Planet Erlang](https://daily.dev/sources/planeterlang)** · 8 min read · 1 upvotes · 0 comments ## Summary Systems most often fail during peak demand moments like product launches, live events, or ticket drops — exactly when failure is most costly. The core causes are fragile state management, tight service coupling, lack of fault isolation, and inadequate load testing. Resilient systems are built around four principles: assuming failure will happen, isolating blast radius via circuit breakers and rate limiting, designing for high concurrency, and choosing fault-tolerant infrastructure. Practical patterns include stateless application layers, horizontal scaling, asynchronous inter-service communication, and robust observability. Short-term patches introduce hidden complexity; true reliability requires deliberate architectural decisions and realistic load testing. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [How to Build Systems That Stay Online When Everything Spikes](https://daily.dev/posts/how-to-build-systems-that-stay-online-when-everything-spikes-pknwecfjc) · Elixir Forum · 0 upvotes · 0 comments - [The ‘Super Bowl’ standard: Architecting distributed systems for massive concurrency](https://daily.dev/posts/the-super-bowl-standard-architecting-distributed-systems-for-massive-concurrency-mvxs8yfr2) · InfoWorld · 0 upvotes · 0 comments --- Tags: [#observability](https://daily.dev/tags/observability), [#distributed-systems](https://daily.dev/tags/distributed-systems) [View this post on daily.dev](https://daily.dev/posts/how-to-build-systems-that-stay-online-when-everything-spikes--camjar-djoweini-qa0jkemlo) ```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":"How to Build Systems That Stay Online When Everything Spikes- Camjar Djoweini","url":"https://daily.dev/posts/how-to-build-systems-that-stay-online-when-everything-spikes--camjar-djoweini-qa0jkemlo","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/how-to-build-systems-that-stay-online-when-everything-spikes--camjar-djoweini-qa0jkemlo"},"datePublished":"2026-04-09T11:31:20.043Z","dateModified":"2026-04-09T11:31:35.304Z","description":"Systems most often fail during peak demand moments like product launches, live events, or ticket drops — exactly when failure is most costly. The core causes...","image":"https://i.ytimg.com/vi/7CC3_qwTsNI/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/7CC3_qwTsNI/sddefault.jpg","isAccessibleForFree":true,"articleSection":"Planet Erlang","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Planet Erlang","logo":"https://media.daily.dev/image/upload/t_logo,f_auto/v1634553563/logos/noimage","url":"https://daily.dev/sources/planeterlang"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/how-to-build-systems-that-stay-online-when-everything-spikes--camjar-djoweini-qa0jkemlo","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":1},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"observability,distributed-systems","timeRequired":"PT8M","video":{"@type":"VideoObject","name":"How to Build Systems That Stay Online When Everything Spikes- Camjar Djoweini","description":"Systems most often fail during peak demand moments like product launches, live events, or ticket drops — exactly when failure is most costly. The core causes...","thumbnailUrl":"https://i.ytimg.com/vi/7CC3_qwTsNI/sddefault.jpg","uploadDate":"2026-04-09T11:31:20.043Z","duration":"PT8M","url":"https://api.daily.dev/r/QA0JKemLo","embedUrl":"https://www.youtube.com/embed/7CC3_qwTsNI"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Planet Erlang","item":"https://daily.dev/sources/planeterlang"},{"@type":"ListItem","position":3,"name":"How to Build Systems That Stay Online When Everything Spikes- Camjar Djoweini"}]} ```