标签：#tech

Intro If you work with real-time financial tick data via WebSocket long connections, you’ve probably run into frustrating hidden issues: Connections show as online, but data stops flowing. Adding/removing trading symbols triggers connection storms. Minor network glitches break your data pipeline without obvious error logs. Today I’ll share a practical Python solution built around single-connection dynamic subscription and heartbeat timeout detection . We use alltick api as our example throughout this post. I’ll cover real production pain points, architecture, full runnable code, common bugs and optimization results. All code can be directly used in your projects. Real Production Pain Points & Background My team maintains real-time data pipelines for stocks, forex and cryptocurrencies. A core requirement is to add or remove monitored trading symbols on demand. At first, we created one independent WebSocket connection for each symbol. This simple approach caused a lot of problems in production: Bulk symbol updates create frequent connection creation and destruction, leading to reconnection storms and high network load. Ghost subscriptions: Data keeps coming even after you send an unsubscribe request. False-alive sockets: The connection status stays connected, but tick data stops completely. Your analysis logic runs on invalid data. We refactored the architecture to use one single persistent WebSocket connection for all symbols, plus an independent thread for heartbeat monitoring. After the upgrade, all hidden connection issues are gone, and the system runs stably under high-frequency data traffic. 4 Common WebSocket Issues in Fintech Let’s break down the most frequent problems when using WebSocket for financial streaming. 1. Connection Flood & Reconnection Storms Rebuilding connections every time you update symbols causes endless handshakes and closures. It wastes system resources and makes the entire data stream unstable. 2. Undetectable False-Alive Sockets Network j

In an internal memo seen by WIRED, Bosworth promised employees more stability, better communication, and the return of workplace perks as the company seeks to improve morale.

If your electricity bill climbs every summer, a smart thermostat could help keep cooling costs in check. The Amazon Smart Thermostat is an excellent option for its price, especially today. It’s down to just $57.99 at Amazon as a part of Amazon’s early Prime Day sale, which is the best price we’ve seen since Black […]

Fox plans to take over Roku's streaming hardware, OS, and FAST services.

Google Chrome version 150 and 151, expected in late June and July, respectively, will cut off support for the last remaining workarounds for running older ad blockers, 9to5Google reports. Google phased out support for ad-blocking extensions built for Manifest V2, like uBlock Origin, in 2024. At that point, most Chrome users either switched to newer […]

For months, Big Tech's Washington lobbyists have chased after the holy grail of pro-AI legislation: preemption. This would be a comprehensive federal law, passed in Congress and signed by the president, applying one set of AI rules across the entire country and overriding the legally messy state-by-state approach to regulation. For months, lobbyists have run […]

Remembering the ups and downs of the Intel Mac era as it finally winds down.

Roblox's vice president of safety product policy, Eliza Jacobs, told NBC News that Roblox is "optimistic" that its new facial age estimation tech will "continue to get better," saying, "Ticking a box to say you're 13 or older, it's not enough anymore." NBC invited a group of kids to try out Roblox's new video selfie […]

Casey Harrell has had a set of electrodes embedded in his brain for almost three years. Harrell, who has amyotrophic lateral sclerosis (ALS) and is paralyzed, first used his brain-computer interface (BCI) to “speak” sentences with the help of a research team in 2023. Since then, Harrell has clocked thousands of hours of use. He…

Indian IT services company HCLTech is investing $150 million in the Bengaluru startup.

On Friday Google announced it was making a relatively unknown feature of Google Earth available to a wider audience. The desktop version of Google Earth has had a hidden flight simulator mode since 2007, but it's now easily accessible through a web browser without having to download or install any apps. To take to the […]

Ahead of the G7 conference in France, Donald Trump is once again threatening massive tariffs on France over its digital tax.

Rank One, whose board includes a former CIA deputy director and a former FBI science chief, supplied face recognition to Meta for internal development of its smart glasses app.

JPMorgan can't be pleased by any of this.

Last year, the FBI opened a Cyber Range in Huntsville, Alabama, for simulating cyberattacks. Think of it sort of like the famous Hogan's Alley, but for modern digital crime training. It's a massive 22,000 square-foot replica of an entire town, complete with a convenience store, gas station, hospital, and even fully furnished houses. It's a […]

You don't really ever have to explain why a universal remote is a good idea. You have a bunch of stuff that needs controlling; this thing controls them all. Many companies have set out to build a product worthy of this idea, and one product came much closer than most. It was called the Harmony, […]

What UAE BNPL providers need to verify under CBUAE short-term credit rules, which income sources matter, and how automated income verification fits compliance.

Microsoft is preparing to lay off a significant chunk of its Xbox division and is reevaluating the plans for its next-generation Project Helix console. It's apparently also considering dramatically restructuring its relationship with Xbox, and hasn't ruled out spinning it off into a separate company. A new report from The Information suggests that Microsoft has […]

If you’re planning on traveling anytime soon, Bose’s second-generation QuietComfort Ultra headphones are a great companion for long flights and train rides. Not only do they offer excellent noise cancellation, but they also retain the foldable design of their predecessor, making them easy to pack in a carry-on. They’re even easier to recommend today, now […]

Mike Rugnetta is a writer, podcast host, producer, audio engineer, educator, musician, sound designer, and father. In short, the man wears a lot of hats. He's the cocreator and host of the award-winning Never Post, an absolutely must-listen podcast about the internet, as well as Fun City, a TTRPG podcast where he's the GM. He's […]