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Linux Routing Fundamentals

Linux networking supports multiple routing tables and advanced features like policy-based routing (PBR), VRFs, and network namespaces. This summary covers basics of routing tables, explaining their structure, routing lookups, source address selection, and special route types. Linux systems come with default tables: local, main, and default, which are checked in sequence for routing decisions. Users interact with routing tables via the ip command. The article also discusses handling ICMP errors and interface link states. Further articles will expand on advanced routing techniques.

https://blog.sdn.clinic/2025/01/linux-routing-fundamentals/

You Can Make Postgres Scale

Postgres can scale, despite controversy. Challenges include hardware needs and write capacity issues often due to lock contention or idle transactions. A community effort successfully implemented sharding to balance and increase write workloads across multiple databases, aligning with the engineering principle of solving problems fundamentally. The process involved complex steps like synchronizing data and rewriting codes. Ultimately, they created a scalable setup with 36 databases and a tool, PgDog, to automate future scaling. The project aims to demonstrate that Postgres can effectively scale as needed.

https://pgdog.dev/blog/you-can-make-postgres-scale

What Went Wrong With Horizon Worlds? Former Meta Devs Share Surprising Insights — And a Solution to Still Save It

Horizon Worlds, Meta's metaverse project, is struggling due to leadership's misunderstanding of the platform, reliance on 2D app developers, and ineffective monetization strategies. Former Meta developers highlight issues like mandatory “dogfooding” leading to automation, lack of VR experience within the team, and an inability to innovate, resulting in a poor user experience. With only about 300,000 users, compared to Second Life's 500,000, Horizon Worlds is at risk of being labeled a failure. A possible solution to revitalize it involves transitioning to an open-source model, allowing developers to innovate freely and regain user interest.

https://nwn.blogs.com/nwn/2025/03/horizon-worlds-meta-why-failed.html

Web Components Demystified

Web Components Overview:

Scott Jehl's course “Web Components Demystified” clarifies concepts around custom elements in web development. Web components consist of custom elements, HTML templates, and shadow DOM. Custom elements are user-defined HTML tags with specific functionalities, while templates facilitate reusable markup hidden from direct rendering. Shadow DOM encapsulates an element's internal structure, isolating it from external styles and scripts.

Key Concepts:
1. Custom Elements: User-defined tags behaving per specifications (e.g., ).
2. HTML Templates: Hidden markup for reuse (e.g.,