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Cloudflare incident on August 21, 2025

news.ycombinator.com Unknown 2025-10-26 04:14:10

6 min read On August 21, 2025, an influx of traffic directed toward clients hosted in the Amazon Web Services (AWS) us-east-1 facility caused severe congestion on links between Cloudflare and AWS us-east-1. This impacted many users who were connecting to or receiving connections from Cloudflare via servers in AWS us-east-1 in the form of high latency, packet loss, and failures to origins. Customers with origins in AWS us-east-1 began experiencing impact at 16:27 UTC. The impact was substantial

Topics: aws cloudflare congestion network traffic
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An Argument for Increasing TCP's Initial Congestion Window Again

news.ycombinator.com Unknown 2025-11-06 00:23:11

An Argument for Increasing TCP's Initial Congestion Window ... Again Published September 2, 2024 Introduction Google has a long history of performing networking research, making changes, and pushing those changes to the entire internet. In 2011, they published one of my favorite papers, which described their decision to increase the TCP initial congestion window from 1 to 10 on their entire infrastructure. This was soon followed by an RFC filed with the IETF, and eventually became an internet

Topics: congestion initial internet tcp window
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T-Mobile is bringing low-latency tech to 5G for the first time

theverge.com Jay Peters 2026-01-03 08:00:00

is a news editor covering technology, gaming, and more. He joined The Verge in 2019 after nearly two years at Techmeme. Over the next few weeks, T-Mobile is expanding support for the L4S standard, which stands for “Low Latency, Low Loss, Scalable Throughput.” The technology helps high-priority internet packets move along with fewer delays, to make video calls and cloud games feel smoother and reduce annoying hitches. Users won’t need a special phone or plan to take advantage of the benefits fr

Topics: congestion l4s mobile packets saw
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