Asynchronous IO in Postgres 18 | The Backend Engineering Show

Hussein Nasser October 3, 2025
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Hussein Nasser

@hnasr

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Join me as we discuss various software engineering topics with examples and add fun elements to them. We always try to learn by example here in this educational Youtube channel which we believe is the right way to learn. I love Software engineering (especially the backend) and I strive to be a better software engineer every day. Join me on this journey and let us learn together. All opinions, suggestions, and tips I provide in all of this channel's content are my own. Information provided is for educational purposes only. Consider becoming a member to support the channel https://www.youtube.com/channel/UC_ML5xP23TOWKUcc-oAE_Eg/join Check out my courses https://courses.husseinnasser.com Stay awesome! Hussein Nasser, http://www.husseinnasser.com Feel free to shoot me an email [email protected] twitter: @hnasr

Video Description

Postgres 18 has been released with many exciting features such as UUIDv7, Over explain module, composite index skip scans, and the most anticipated asynchronous IO with worker and io_uring mode which I uncover in this show. Hope you enjoy it 0:00 Intro 1:30 Synchronous vs Asynchronous calls 3:00 Synchronous IO 6:30 Asynchronous IO 10:00 Postgres 17 synchronous io 17:20 The challenge of Async IO in Postgres 18 20:00 io_method worker 23:00 io_method io_uring 29:30 io_method sync 31:08 Async IO isn’t done! 31:30 Support for backend writers 32:36 Improve worker io_method 33:00 direct io support 37:00 Summary Fundamentals of Database Engineering udemy course (link redirects to udemy with coupon) https://database.husseinnasser.com Fundamentals of Operating Systems Course https://oscourse.win Link to Andres 2025 talk https://youtu.be/GR5v9DHiS8w?si=JQrcQaiPyt1ULu_x NodeJS Internals and Architecture https://node.win Backend Troubleshooting Course https://performance.husseinnasser.com Fundamentals of Backend Engineering https://backend.win Fundamentals of Networking for Effective Backends udemy course (link redirects to udemy with coupon) https://network.husseinnasser.com Fundamentals of Database Engineering udemy course (link redirects to udemy with coupon) https://database.husseinnasser.com Follow me on Medium https://medium.com/@hnasr/membership Introduction to NGINX (link redirects to udemy with coupon) https://nginx.husseinnasser.com Python on the Backend (link redirects to udemy with coupon) https://python.husseinnasser.com Become a Member on YouTube https://www.youtube.com/channel/UC_ML5xP23TOWKUcc-oAE_Eg/join Buy me a coffee if you liked this https://www.buymeacoffee.com/hnasr Arabic Software Engineering Channel https://www.youtube.com/channel/UChWZsjdoRvZ0T9QWZOD6UpA 🔥 Members Only Content https://www.youtube.com/playlist?list=UUMO_ML5xP23TOWKUcc-oAE_Eg 🏭 Backend Engineering Videos in Order https://backend.husseinnasser.com 💾 Database Engineering Videos https://www.youtube.com/playlist?list=PLQnljOFTspQXjD0HOzN7P2tgzu7scWpl2 🎙️Listen to the Backend Engineering Podcast https://husseinnasser.com/podcast Gears and tools used on the Channel (affiliates) 🖼️ Slides and Thumbnail Design Canva https://partner.canva.com/c/2766475/647168/10068 Stay Awesome, Hussein

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