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Manual testing on personal devices is TOO SLOW AND TOO LIMITED. It forces teams to CUT RELEASES A WEEK EARLY just to test before submitting them to app stores. And without broad device coverage, issues slip through.
✅ QA cycles reduced to just 15 minutes
Notion implemented WebAssembly SQLite in its web app. This resulted in a 20% reduction in page navigation latency. To achieve this, its team used Web Workers to offload database operations to background threads and a SharedWorker with the Web Locks API to fix data integrity issues. They also addressed issues of slow disk reads by implementing a "race" between disk cache and network requests.
Clickhouse is increasingly used for analytics by PostgreSQL users, and this often requires data replication between the two. PeerDB is an open-source CDC (Change Data Capture) solution that can be used to make data replication easy. This article goes over how to deploy PeerDB, create test data, and set up initial replication and schema evolution.
Svelte 5 introduces deep reactivity using proxies and implicit component lifecycle state, which has better performance at the expense of more complexity. However, these changes create unexpected issues, such as proxies breaking IndexedDB storage and component state disappearing in closures.
Instead of seeking permission ("yes") from your boss for initiatives within your role's scope, tell them about your plan and offer them a chance to object ("no"). This means stating your intention to complete a project by a specific deadline and keeping your boss informed along the way. Usually, your boss will say yes or give some comments for improvement.
While Tailwind allows devs to ship faster with predefined styles and no custom CSS, it also is harder to maintain and scale in larger projects. Thoughtfully named styles and a well-designed CSS architecture might be better in the long run for complex projects.
Despite the rise of newer tech like Next.js, Ruby on Rails is still valuable due to its simplicity, stability, and focus on web fundamentals. It abstracts away technical complexities, allowing devs to concentrate on key details of the product. Rails is great for projects where speed and lower maintenance are the priority.
mdq is a command-line tool that allows users to query and extract specific parts of a Markdown document. It has a simple filter syntax mirroring Markdown structure for selecting elements like sections, lists, links, and tables.
Directus is a real-time API and app dashboard for managing SQL database content. It has support for most popular SQL databases and layers a fast Node.js API layer on top of any SQL database.
Artifacts is a sandbox MMORPG for devs where players use programming languages to control their characters via an API. The game has a player-driven economy and activities like monster fighting, resource gathering, crafting, and quests. Players can automate their characters' actions using HTTP endpoints and control up to five characters at the same time.
OpenAI researchers found that even the most advanced AI models struggle to solve most coding problems. They tested frontier models like GPT-4o and Claude 3.5 Sonnet on software engineering tasks from Upwork. While the AI models were fast, they often failed to grasp the context and scope of bugs, creating incorrect or incomplete solutions.
During a major Facebook outage in 2014, known internally as "Call the Cops", this developer found that "war rooms" were pointless for deep investigations. He struggled to diagnose the root cause of the outage while confined to a poorly ventilated room with limited resources. He needed to escape that environment and use his usual setup to effectively investigate. The root cause was eventually traced to a bug in the fbagent process that caused it to kill all processes on the machine when the fork failed due to running out of memory.
CSS now supports individual transform properties (translate, rotate, and scale), which are all additive. This means they combine with the transform property in a set order—translate first, then rotate, scale, and finally any transformations listed in transform.
Blogging about your learning process, like by creating tutorials, is great both for solidifying your own understanding and for helping others who are searching for similar information.
Beatcode is like Leetcode, but you can compete against other devs and practice together.
A curated collection of animated React component libraries and design systems.
React released the captureOwnerStack API in Canary and experimental channels, which lets you retrieve the current Owner Stack during development as a string, which can be useful for better custom error overlays by providing detailed component ownership information.