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Looked at 30 products running Meta + TikTok ads profitably. 7 patterns every single one had: PRICE : $25-$65 Below = thin margins. Above = harder impulse. BUNDLE OPTIONS "Buy 2 save 10% / Buy 3 save 15%" — every store had this. None were single-product only. VISUAL HOOK IN 3 SECONDS Unique design, specific problem solved, or "wow factor." Generic products failed. REAL REVIEWS WITH PHOTOS Not 5-star spam. Real, mixed reviews. Even negatives build trust. SHIPPING TIME ON PDP Every store disclosed it directly. None hid it in FAQ. STICKY ADD-TO-CART ON MOBILE All 30 had it. If your Add to Cart scrolls off-screen on mobile, you're losing sales. POST-PURCHASE UPSELL "Add this for $X" / subscription / bulk refill. This is where AOV lives. WHAT THEY DIDN'T HAVE Live chat (only 4/30) Exit-intent popups (only 2/30) Countdown timers (only 3/30) Countdown timers (only 3/30 — most had REAL shipping urgency instead) Multiple payment options visible on PDP (most just had Shopify default) The "guru tactics" aren't what winning stores use. 3 QUICK WINS Pick products with visual hooks Bundle by default Fix PDP before scaling ads

We've been testing coolers for years, and our top picks are on sale for Amazon Prime Day.

Everything is expensive. Treat yourself to one of these WIRED-tested and -approved Prime Day picks under $30.

It’s been hot in London this week. Really hot. A dangerous heat wave has hit Western Europe. Yesterday, the UK recorded its highest ever June temperature at 36.1 °C (about 97 °F). But as the weather app on my phone confirmed, it felt like 39 °C. It’s frightening that we are seeing such temperatures in…

Where's the Trump phone? We're going to keep talking about it every week. We still don't have the phones we preordered yet, but this week the T1 hit open sale, no deposit required. Trump Mobile's T1 Phone is now available for anyone to buy directly. The phone has previously trickled out to a small number […]

We've gone from A to Z to find Amazon's best Prime Day deals on the gear worth owning.

submitted by /u/fagnerbrack [link] [留言]

Times are hard in 2026. These Amazon Prime Day deals under $100 on earbuds, Kindles, and other tested products should help make life just a little bit easier.

There’s no better time to get a Kindle than during Amazon's own sale event.

Move over, spring cleaning. These vacuum deals will give your home the cleanest summer yet thanks to Amazon Prime Day.

From MacBooks to gaming laptops, these are the very best deals on some of my very favorite laptops for Amazon Prime Day.

TL;DR Welcome back to Dev Opportunity Radar. This is a weekly series where I share opportunities,...

I've been working on a different approach to giving AI coding agents context about large codebases. Instead of indexing files by embeddings or feeding hundreds of lines into the model, the idea is to statically classify code into structured semantics. For each file it produces things like: -Primary semantic role (service, repository, controller, DTO, etc.) with the evidence used to reach that conclusion. -Behavioral traits (transaction handling, business rule enforcement, orchestration, event emission, in-memory state, database interaction, etc.). -Architectural relationships and dependency direction. It also works at the function level, so individual methods get their own behavioral classification and relationship hints. The output is structured JSON rather than summaries, so an agent can query it instead of rereading source files. One thing I found interesting is that this often gives agents enough architectural context without spending tokens on large files. Instead of inferring "what is this class?", they already know something like: Domain service, performs transactional DB writes, enforces business rules, emits events, depends on persistence and event layers. Beyond agent context, the same information seems useful for architectural analysis—tracking responsibility drift, identifying layering violations, or seeing when a service gradually accumulates unrelated behaviors. I've been testing it on Medusa (TypeScript) so far, and the results have been promising, although there are still plenty of edge cases. I'm curious how others are approaching this. If you're building coding agents or working with large monorepos, what's been the hardest part of codebase understanding? Context size, architectural reasoning, stale indexes, something else? submitted by /u/Zealousideal_Ant4747 [link] [留言]

I just published Fintech Engineering Handbook distilled from 6 years of tears, sweat and swears. It’s a free ~25-page resource with various hints and patterns around handling money in software systems. Tell me what you think! submitted by /u/Krever [link] [留言]

Every small task used to mean a new tab. JSON formatter on one site, GST calculator on another, PDF merger somewhere that wanted my email before it would merge two pages. Ads everywhere, slow UIs, and that low-grade worry about uploading a payslip or invoice to a server I do not control. I got tired of juggling twenty bookmarks for work that should take thirty seconds — so I started building one place for all of it. What ToolReign is ToolReign is a free online toolbox: 260+ utilities across 15 categories , all running in your browser. Developer tools (JSON formatter, JWT decoder, API client), text utilities, SEO helpers, PDF and image tools, spreadsheets, and a finance section I built with India in mind — GST with CGST/SGST/IGST splits, EMI and SIP calculators, HRA exemption, gratuity, income tax estimates, and more. The idea is straightforward: open a tool, do the work, leave. No signup wall, no file uploads to a backend, no account to manage. I am Anirudha Sonwane , a Senior Software Engineer at Giant Leap Systems in Pune. ToolReign is a side project I build around my day job — not a pitch deck, just something I wished existed. The tech stack decisions Next.js 14 App Router and static export Each tool lives at its own route under src/app/{category}/{tool-slug}/ . That maps cleanly to SEO: one URL, one search intent, one page of metadata. The site exports statically ( output: 'export' ), so production deployment is uploading an out/ folder to static hosting — no Node server to babysit. The App Router made this scale. Add a page component, register the slug in tool-registry.json , and the sitemap, category hubs, and search index pick it up automatically. At 260+ tools, hand-maintaining URLs would have broken within a month. 100% client-side — the decision that shaped everything This was the core architectural bet, and it is also the privacy story: your data never leaves the browser. Finance calculators are plain TypeScript math with useMemo . PDF merge and split use

I spent 3 months building a tool that solves the most annoying part of working on a dev team. You know the drill: → New dev joins → "hey check your DMs" → Someone pastes the .env in Slack → That message sits there forever → 6 months later someone screenshots it by accident or worse — → git add . → git commit -m "added env" → git push → you just leaked your prod database URL to the internet I got tired of it. So I built DotSync. ─────────────────────────────────── Here's what it looks like in practice: $ dotsync push 🔒 Encrypting 10 secrets for team access... 📤 Uploading... ✅ Version : v7 Secrets : 10 keys encrypted Teammates can now run: dotsync pull That's it. New dev joins? They run dotsync pull. Secrets updated? dotsync push. Moving between your laptop and work machine? dotsync pull. ─────────────────────────────────── The part I actually care about — security: Everything is encrypted ON your machine before it hits the network. The server stores a blob it literally cannot read. I'm not asking you to trust my infrastructure. You don't have to. Stack if you're curious: • Argon2id key derivation (64MB memory cost — brute force isn't happening) • AES-256-GCM encryption • Zero-knowledge server (stores ciphertext only) • Single Go binary, no runtime deps ─────────────────────────────────── Other things it does that I use daily: dotsync diff → shows exactly which keys changed vs remote (never shows values) dotsync history → full version history, who pushed what and when dotsync rollback → restore any previous version in one command dotsync run -- node server.js → injects secrets as env vars, nothing written to disk dotsync scan → scans your codebase for accidentally committed secrets ─────────────────────────────────── Free tier covers: • 1 project • 3 team members • 7 days history That handles most small teams completely free. ─────────────────────────────────── Now the part where I need your help: I'm looking for 100 engineers to actually stress test this. Not "give i

Hi folks! I’m the architect behind WLOADCTL, a commercial workload scheduling system for enterprise automated task orchestration and RPA docking. A quick share of my daily work focus: Distributed task scheduling core development with Java & C Cross-system automation scripts built by Python & Shell Backend frontend based on SpringBoot + Vue3 Edge traffic protection & access optimization using Cloudflare Enterprise RPA integration to automate repetitive backend operations I’ve been tackling a lot of real-world pain points like cross-Linux distro compatibility, high-frequency API access security and mass task concurrency control recently. If you’re working on workload scheduling, backend automation or Cloudflare security tuning, feel free to leave a comment to chat!

I am going to start with a number most people will not say out loud. 1,200 applications. That is how many jobs I applied to over 3 to 4 months trying to switch from a service-based company to a product-based one. I had spreadsheets, saved searches, and browser tabs I kept telling myself I would close tomorrow. Some nights I was applying at 11pm just to hit my self-imposed daily quota. Out of 1,200, I got around 10 interview calls. Out of 10, I got 4 offers. The applications got me in the room. What happened inside the room is what this post is actually about. The One Thing That Followed Me Into Every Interview At my previous company I worked on a lot of things, but one project came up in literally every single interview. We had a Python module that parsed ASAM MDF files. Binary log files from vehicles and sensors, often gigabytes in size. The parser was painfully slow. Around 8 minutes to load a single file. The kind of slow where you start it, go get lunch, and hope it is done when you come back. I rewrote it in Rust. Load time dropped from 8 minutes to 12 seconds. 40x improvement on GB-scale files. Every interviewer stopped me the moment I mentioned it. The questions were real engineering questions, not generic resume stuff. "Why Rust over Go or C++?" "How did you profile the bottleneck first?" "What was your testing strategy when rewriting something this critical?" "What would you do differently now?" I would spend 20 to 30 minutes just on this one project. Not because they were grilling me. Because it was a genuine conversation between two people who cared about the problem. Here is why it worked: I had lived with it. I hit walls in the rewrite that took days to figure out. The context, the wrong turns, the eventual solution were all stored in my head. When a follow-up question came, the answer was just there. You cannot fake that. A first follow-up question exposes a tutorial project immediately. Real work under real constraints creates a depth that no amount o

Environment And Situation Control room of an apartment Number of installed product : 3 (PC-based NVR, dual-LAN supported) Remote support : X (I actually went to the site and diagnosed) Reported Issue In viewer, when user changes play speed while playing back the recorded data, it randomly plays the data in hyper speed(almost 30x~60x) For example: 4x play means 4 seconds in video per a second. But in the site, it played 30~60 seconds per a seconds, showing the video stutturing. Diagnosis Checked the overall environment. System(CPU / RAM usage), network environment(bandwidth), resoulution, stream configurations, etc. -> Nothing suspicious. Some of the installed cameras had unusual fps and gop values Normally, fps and gop values are set to be equal(for exmaple, if fps is 30 then gop is also 30 so that iframe can appear every second) But the cameras' set up values were fps 15, gop 60(iframe per 4 seconds) Assumption Somehow the viewer keeps failing to find iframe to play. And it's maybe because iframe appears with a long gap. Quick note: iframe is kind of a key-frame. Since the viewer starts decoding from an iframe, it's necessary when it comes to playback. What I Tried Set all the cameras' gop value to 15(same as fps) Result Ran a test with data before changing the gop values and after. During interval before changing the gop, the issue occurred almost every time I tried. But after chaning the gop, the issue no longer occurred. Concolusion The issue was triggered by large GOP value (GOP 60 with FPS 15). With only one iframe every four seconds, the viewer sometimes failed to find an appropriate iframe after changing the playback speed, causing abnormal playback behavior. According to the viewer developer, this is likely related to the viewer's iframe searching logic, which is still under investigation. Keep This In Mind Check camera settings(especially gop and fps) first when it comes to playback issue. Always check before/after data to confirm assumption.

I've been developing an AI product using LLM APIs (from OpenRouter) but want to deploy an open-source LLM in my own Prod env. which I can control. Few reasons behind this are: - I wanna own the complete stack around my product. - Second I wanna fine-tune the model around my usecase. So, what's the most affordable but a good platform for this? I'm not an AI engineer so don't wanna stuck in CUDA or Transformers hell, anything which can give me a straight path towards my private deployment. Thanks, submitted by /u/Necessary_Gazelle211 [link] [留言]