The Backend Engineering Show with Hussein Nasser

Dive into the fascinating world of Envoy Proxy, originally crafted at Lyft to enhance microservices communication. Discover its layered architecture, including how it manages different proxying layers. Learn about configuring TLS 1.2 and 1.3 for security and the benefits of HTTP/2. Explore practical optimizations, connection pools, and the art of blocking specific requests. The discussions also touch on Envoy's capabilities compared to other solutions, making this a treasure trove for backend enthusiasts.

Envoy Proxy is an L3/L4 Proxy that is designed to be service mesh, In this video, I discuss my initial thoughts about the product, design choices, and much more. The actual full video on Envoy will be coming soon stay tuned.

In this video, I explain Postgres Vacuum while I walk my dog.

Cloudflare is doing fantastic job to the web community security and backend engineering. This latest fix is awesome it is the ability to auto-tune window size buffer when it comes to uploading HTTP/2 traffic. Article https://blog.cloudflare.com/delivering-http-2-upload-speed-improvements/ 4:15 slow tcp start https://www.youtube.com/watch?v=rgPcxg8gjho&t=1s 5:40 HTTP crash course https://www.youtube.com/watch?v=0OrmKCB0UrQ&t=4s 6:20 TCP crash course https://www.youtube.com/watch?v=qqRYkcta6IE 12:20 Bandwidth bideo https://www.youtube.com/watch?v=6Tf80mbhyAQ

SameSite Cookie Lax is interesting and we are finding new exceptions everyday. Let us discuss this one where lax cookies will be sent on POST request as long as the cookies are fresh (2 minutes) Resources https://www.chromestatus.com/feature/5088147346030592

This code was introduced for a user experience ending up taking 50% of the traffic on DNS Root server.   Sorry I was touching my hair a lot just took a shower lol. With regards to this article I want to ask you guys a question, Chrome put this feature in order to improve the user experience but it ended up having a huge cost. Did you ever make a choice between performance and user experience? which one usually wins for you? would love to know your opinion   Resources   https://arstechnica.com/gadgets/2020/08/a-chrome-feature-is-creating-enormous-load-on-global-root-dns-servers/ https://docs.microsoft.com/en-us/deployedge/microsoft-edge-policies#dnsinterceptionchecksenabled https://news.ycombinator.com/item?id=24231857 https://blog.apnic.net/2020/08/21/chromiums-impact-on-root-dns-traffic/

Windows 95 was a great operating system, wrote so many apps on top of it and played so many games too. Join me as I discuss this https://www.theverge.com/21398999/windows-95-anniversary-release-date-history

GraphQL was born to solve a major limitation in REST API, but the cost of GraphQL and barrier to entry is high. Vulcain addresses REST limitations by introducing HTTP/2 push.  Is a simpler alternative? let us discuss   Learn about Vulcain here https://github.com/dunglas/vulcain

Chrome is enabling Raw TCP and UDP from the Browser, this is big news! let us discuss the implication, security and benefit for us backend engineers. resources https://www.theregister.com/2020/08/22/chromium_devs_raw_sockets/ raw tcp spec https://github.com/WICG/raw-sockets

In this video, I discuss the different concurrency control at database transactions, specifically the pessimistic vs optimistic concurrency control. and the pros and cons of each.    0:00 Intro 3:00 concurrency Control 5:30 Pessimistic concurrency Control 9:20 Optimistic concurrency Control  Resources  https://en.wikipedia.org/wiki/Optimistic_concurrency_control https://www.baeldung.com/java-jpa-transaction-locks https://docs.oracle.com/javaee/7/api/javax/persistence/OptimisticLockException.html https://en.wikipedia.org/wiki/Time-of-check_to_time-of-use https://www.2ndquadrant.com/en/blog/postgresql-anti-patterns-read-modify-write-cycles/