--- title: Best Netflix TechBlog posts — September 2025 | daily.dev description: The most upvoted Netflix TechBlog posts from September 2025, curated by the daily.dev community. canonical: https://daily.dev/sources/netflix/best-of/2025/09 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/netflix/best-of/2025/09 og:type: website og:site_name: daily.dev og:title: Best Netflix TechBlog posts — September 2025 | daily.dev og:description: The most upvoted Netflix TechBlog posts from September 2025, curated by the daily.dev community. og:image: https://media.daily.dev/image/upload/s--VAY5ToZt--/f_auto/v1724209435/public/daily.dev%20-%20open%20graph --- # Best of Netflix TechBlog — September 2025 1. 1 [](https://daily.dev/posts/building-a-resilient-data-platform-with-write-ahead-log-at-netflix-dsy5fjhgt "Building a Resilient Data Platform with Write-Ahead Log at Netflix") Article Netflix TechBlog · 51w Building a Resilient Data Platform with Write-Ahead Log at Netflix Netflix built a generic Write-Ahead Log (WAL) system to solve data consistency and reliability challenges at scale. The system provides a simple API that abstracts underlying message queues (Kafka, SQS) and supports multiple use cases including delayed queues, cross-region replication, and multi-partition mutations. WAL prevents data loss, handles system entropy across different datastores, and enables reliable retry mechanisms for real-time data pipelines. The architecture separates message producers from consumers, uses configurable namespaces for logical separation, and leverages Netflix's Data Gateway infrastructure for deployment. Key applications include EVCache cross-region replication, Live Origin's delayed delete operations, and Key-Value service's MutateItems API with two-phase commit semantics. 89 [See all Netflix TechBlog archives](/sources/netflix/best-of) ```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","@graph":[{"@type":"CollectionPage","@id":"https://daily.dev/sources/netflix/best-of/2025/09#page","url":"https://daily.dev/sources/netflix/best-of/2025/09","name":"Best Netflix TechBlog Posts — September 2025","description":"The most upvoted Netflix TechBlog posts from September 2025, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/netflix/best-of/2025/09#items","numberOfItems":1,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/building-a-resilient-data-platform-with-write-ahead-log-at-netflix-dsy5fjhgt","name":"Building a Resilient Data Platform with Write-Ahead Log at Netflix"}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Sources","item":"https://daily.dev/sources"},{"@type":"ListItem","position":3,"name":"Netflix TechBlog","item":"https://daily.dev/sources/netflix"},{"@type":"ListItem","position":4,"name":"Best of","item":"https://daily.dev/sources/netflix/best-of"},{"@type":"ListItem","position":5,"name":"September 2025"}]}]} ```