Dev.to
A load balancer inspired by how Emperor Penguins survive Antarctic winters
Why I modeled a load balancer after Emperor Penguin huddles A few months ago I was reading about how emperor penguins survive Antarctic winters. Temperature drops to -40°C, wind hits 120km/h, and somehow these birds make it through. Not because they're individually tough. Because they rotate. Cold penguins on the outside push inward. Warm ones from the center move out to rest. Nobody coordinates this. No penguin is in charge. It emerges from one simple rule: if you're cold, push in. If you're warm, you'll get pushed out eventually. I couldn't stop thinking about this. I was working on a service mesh at the time and dealing with the usual problem — one slow server quietly dragging down the whole cluster. Round robin doesn't care. Least connections helps but not always. Weighted approaches need manual tuning that goes stale immediately. The penguin thing kept nagging at me. What if servers had a "temperature"? What if hot servers rotated out to rest? That's HuddleCluster. The basic structure Two rings: Inner ring (deque): Active servers. Requests go to them round-robin. Simple, fair, zero overhead for normal traffic. Outer ring (min-heap): Resting servers. Keyed by temperature — coolest server sits at the top, ready to rotate back in first. When a server in the inner ring runs hot past a threshold, it moves out. When an outer ring server cools down, it comes back in. That's the entire rotation logic. About 50 lines of Python. What is "temperature"? This took me a while to get right. My first attempt was just raw latency. That was bad. A server handling one slow database query looks terrible even when it's completely healthy. I needed something more composed. Current formula: pythontemperature = EMA( 0.7 * relative_latency_anomaly + 0.1 * cpu_score + 0.1 * memory_score + 0.1 * (error_rate + connection_score) ) Three decisions here worth explaining. EMA over simple moving average EMA weights recent measurements more heavily. If a server just had a bad spike but recovere
Rahad Bhuiya
2026-06-15 23:32
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Dev.to
Building a Low-Latency Polymarket Bot for Earnings Markets: A Real-World Attempt (Lessons & Technical Breakdown)
A bot on Polymarket quietly extracted $32k in near risk-free profits by sniping “Will Company XYZ Beat Earnings?” markets. It waits for the official release, then instantly buys the winning side. Many limit orders from retail traders remain uncancelled, creating a post-announcement arbitrage window. Two developers decided to challenge it. Here’s what they learned while trying to build a faster version. Infrastructure Choices Location : Polymarket’s CLOB runs in AWS eu-west-2 (London). They deployed from Ireland (eu-west-1, Dublin) — the closest realistic option without IP tricks. UK IPs are blocked. Language : Rust for type safety and speed. The author notes you can achieve competitive latency in Python if you strip unnecessary network calls. Key Warning : Avoid the official Polymarket SDKs for ultra-low latency. They include helpful but slow pre-trade checks. Build lean custom clients. The Data Feed Challenge (The Real Bottleneck) The critical edge is getting earnings announcements faster than competitors. Source Performance Verdict Scraping Newswires Too slow Failed Benzinga Low-Latency Slower than manual clicking Failed Paid ultrafast feed ~500ms after release Still too slow EDGAR Consistently slower than newswires Backup only Even at 500ms, the order book was already swept by faster bots. The top players are likely using extremely expensive dedicated feeds or custom setups. Technical Lessons Learned Network > Code Most latency lives in the network round-trip, not in language choice. Optimize transport first. Custom Execution Layer Skip heavy SDK abstractions. Direct signed orders with minimal validation. Post-Event Sniping Logic Monitor newswire feeds aggressively Parse EPS vs. estimate instantly Place aggressive limit/market orders on the winning side Handle cases with ambiguity (multiple interpretations of “beat”) Reality Check They made some wins during EPS ambiguity or when faster bots hit size limits, but never won on pure speed against the leader. Why This
FatherSon
2026-06-15 23:31
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Dev.to
Bootcamp Grad Dives Into Google vs OpenAI API Pricing
Honestly, bootcamp Grad Dives Into Google vs OpenAI API Pricing When I finished my coding bootcamp three months ago, I thought I understood what an API did. I mean, you send a request, you get a response back, right? What I did not understand was how dramatically the cost could vary depending on which model you picked. I had no idea that a single line of code change could mean the difference between paying pennies and paying hundreds of dollars at scale. That is the rabbit hole I fell down last week, and I want to walk you through everything I learned. This is the post I wish I had read before I burned through my first $50 in API credits. Why I Started Looking At Pricing In The First Place I was building a small app that takes user reviews and summarizes them. Pretty straightforward. I figured I would just plug in the most popular model and call it a day. That model, if you have been paying attention to the news, is GPT-4o. So I wired it up, ran a few tests, and everything looked great. Then I did the math. GPT-4o charges $2.50 per million tokens on input and $10.00 per million tokens on output. I did not even know what a "million tokens" really meant in practice. So I tested my app with maybe 50 reviews and watched my credit balance drop. It was not catastrophic, but it was enough that I started wondering if there was a cheaper way. I was shocked when I found out how big the gap actually is. The Pricing Table That Changed My Whole Plan I stumbled onto a platform called Global API, and honestly, the pricing chart there blew my mind. They give you access to 184 different AI models, with prices ranging all the way from $0.01 to $3.50 per million tokens. Compare that to the GPT-4o output price of $10.00 per million tokens, and you start to understand why I panicked a little when I saw my early numbers. Here are the five models I ended up comparing side by side: Model Input Cost Output Cost Context Window DeepSeek V4 Flash $0.27 $1.10 128K DeepSeek V4 Pro $0.55 $2.20 20
bolddeck
2026-06-15 23:31
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TechCrunch
Cybersecurity vets protest ‘dangerous’ US government ban on Anthropic’s most powerful models
A group made up of dozens of cybersecurity experts urged the White House to remove export control restrictions on Anthropic’s models Fable and Mythos, arguing that the order is going to limit the ability of cybersecurity defenders to secure their software and products.
Lorenzo Franceschi-Bicchierai
2026-06-15 23:29
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Ars Technica
F1 in Spain: An old-fashioned strategy fight can still be thrilling
Armed with a ton of new upgrades, Ferrari came to Spain full of confidence.
Jonathan M. Gitlin
2026-06-15 23:25
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Product Hunt
Edgee Turbo Models
Use Claude Code with Kimi K2.7 Code, MiniMax M2.7, and more Discussion | Link
fmerian
2026-06-15 23:24
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HackerNews
Anthropic Sued over Limits on Its $200-a-Month AI Plans
JumpCrisscross
2026-06-15 23:21
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Engadget
Xbox Game Studios chief reportedly steps down as layoffs loom
Things continue to look grim for Xbox as layoffs loom and Craig Duncan steps down.
staff@engadget.com (Kris Holt)
2026-06-15 23:20
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Product Hunt
Cotypist
Local AI Autocomplete in your voice, anywhere on your Mac Discussion | Link
2026-06-15 23:20
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MIT Technology Review
This man with ALS is “the first power user” of a brain implant that lets him speak
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…
Jessica Hamzelou
2026-06-15 23:12
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Product Hunt
AGIRAILS
Let AI agents hire and pay each other w/ on-chain settlement Discussion | Link
2026-06-15 23:09
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HackerNews
My Homelab AI Dev Platform
rsgm
2026-06-15 23:09
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HackerNews
Ask HN: Has anyone replaced Claude/GPT with a local model for daily coding?
Has anyone here fully swapped Claude/GPT for a local model as their main coding tool, not just for side experiments? If so, please share your setup and performance (e.g tok/s)
cloudking
2026-06-15 22:46
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TechCrunch
SpaceX’s biggest-ever IPO just grew to $85.7 billion raised
SpaceX's IPO underwriters maxed out their share purchases, adding to an already historic amount of money raised.
Sean O'Kane
2026-06-15 22:45
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HackerNews
Hetzner increased dedicated server prices 3-4x
A few months after raising prices ~30%, Hetzner has increased bare metal pricing again, this time by 3-4x: AX102: €124 -> €454 AX162 (256GB): €244 -> €844
enescakir
2026-06-15 22:44
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TechCrunch
Salesforce acquires AI customer service platform Fin for $3.6 billion
Salesforce says it wants to use Fin's team and technology to improve Agentforce, its existing enterprise platform that businesses can use to build custom AI agents that automate tasks.
Amanda Silberling
2026-06-15 22:34
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InfoQ
Spring News Roundup: Point Releases of Boot, Security, Integration, Modulith and Spring AI 2.0
There was a flurry of activity in the Spring ecosystem during the week of June 8th, 2026, highlighting point releases of: Spring Boot, Spring Security, Spring Session, Spring Integration, Spring Modulith, Spring AMQP and Spring Vault; and GA releases of Spring AI 2.0 and Spring Data 2026.0.0. By Michael Redlich
Michael Redlich
2026-06-15 22:15
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Product Hunt
Botme
AI customer support agent, live on your website in 5 minutes Discussion | Link
2026-06-15 22:09
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TechCrunch
Sarvam becomes India’s newest AI unicorn with $234 million funding round led by HCLTech
Indian IT services company HCLTech is investing $150 million in the Bengaluru startup.
Jagmeet Singh
2026-06-15 21:46
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HackerNews
India, UAE partner on AI sovereignty to bypass Google, Microsoft
speckx
2026-06-15 21:37
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