The latest articles on DEV Community by casino guy (@casino_guy_01c9d5ff822b65). https://dev.to/casino_guy_01c9d5ff822b65 https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4026033%2Ff677b0de-c1f9-4b7f-9712-0cf79b3f7913.jpg https://dev.to/casino_guy_01c9d5ff822b65 en casino guy Sun, 12 Jul 2026 12:34:07 +0000 https://dev.to/casino_guy_01c9d5ff822b65/httpsflowfeedcc-51pk https://dev.to/casino_guy_01c9d5ff822b65/httpsflowfeedcc-51pk <div class="ltag__link--embedded"> <div class="crayons-story "> <a href="https://dev.to/casino_guy_01c9d5ff822b65/i-built-a-free-real-time-financial-news-terminal-heres-the-tech-stack-1bbl" class="crayons-story__hidden-navigation-link">I built a free real-time financial news terminal here's the tech stack</a> <div class="crayons-story__body crayons-story__body-full_post"> <div class="crayons-story__top"> <div 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</div> </div> </div> </div> <div class="crayons-card c-embed text-styles text-styles--secondary"> <div class="c-embed__content"> <div class="c-embed__cover"> <a href="https://flowfeed.cc/" class="c-link align-middle" rel="noopener noreferrer"> <img alt="" src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fstorage.googleapis.com%2Fgpt-engineer-file-uploads%2F2Mt2WQL3uTO8jVMZoxQnrX0Tyqf1%2Fsocial-images%2Fsocial-1778433257735-b3a2d2fb-8248-4284-8194-208a14b0f891.webp" height="420" class="m-0" width="800"> </a> </div> <div class="c-embed__body"> <h2 class="fs-xl lh-tight"> <a href="https://flowfeed.cc/" rel="noopener noreferrer" class="c-link"> FlowFeed — Free Financial News Terminal for Traders </a> </h2> <p class="truncate-at-3"> Free real-time financial news terminal for traders. Crypto, forex, stocks, commodities. Economic calendar, sentiment, AI analysis. </p> <div class="color-secondary fs-s flex items-center"> flowfeed.cc </div> </div> </div> </div> casino guy Sun, 12 Jul 2026 12:33:36 +0000 https://dev.to/casino_guy_01c9d5ff822b65/i-built-a-free-real-time-financial-news-terminal-heres-the-tech-stack-1bbl https://dev.to/casino_guy_01c9d5ff822b65/i-built-a-free-real-time-financial-news-terminal-heres-the-tech-stack-1bbl <p>Bloomberg Terminal costs $24,000/year.</p> <p>I built the same thing for free. Here's how.</p> <h2> The problem </h2> <p>Every trader needs real-time financial news. <br> But professional terminals cost between $2,000 and $24,000 <br> per year. That's insane for an indie developer or <br> retail trader.</p> <p>So I built <a href="https://flowfeed.cc/" rel="noopener noreferrer">https://flowfeed.cc/</a> — a free real-time news terminal <br> that pulls from 24+ sources simultaneously.</p> <h2> The stack </h2> <ul> <li> <strong>Frontend</strong>: React + TanStack Query</li> <li> <strong>Backend</strong>: Supabase (PostgreSQL + Edge Functions on Deno)</li> <li> <strong>Builder</strong>: Lovable (AI-powered React builder)</li> <li> <strong>Payments</strong>: Whop</li> <li> <strong>Analytics</strong>: Taap.it</li> </ul> <h2> The news pipeline </h2> <p>This was the hardest part to get right.</p> <p>The feed pulls from two types of sources:</p> <p><strong>RSS feeds (7 sources)</strong></p> <ul> <li>CNBC, MarketWatch, Yahoo Finance, Investing.com</li> <li>CoinDesk, The Block, ZeroHedge</li> </ul> <p><strong>Telegram channels (9 channels)</strong><br> Using the public preview endpoint <code>t.me/s/{channel}</code> — <br> no API key required. Telegram channels like WatcherGuru <br> and WalterBloomberg often break news 30-60 seconds <br> before mainstream media.</p> <p>Each article goes through a pipeline:</p> <ol> <li> <strong>Fetch</strong> — server-side via Supabase Edge Functions (avoids CORS issues)</li> <li> <strong>Strip HTML</strong> — custom entity decoder handles double-encoded HTML from ZeroHedge and others</li> <li> <strong>Quality filter</strong> — exclusion-only logic, removes lifestyle/non-financial content</li> <li> <strong>Dedup</strong> — URL-based deduplication (strips UTM params before comparing)</li> <li> <strong>Near-dup</strong> — catches same story posted on both Telegram and RSS within 5 minutes</li> <li> <strong>72h cutoff</strong> — Breaking tab shows last 3 days</li> <li> <strong>Auto-refresh</strong> — client polls every 30 seconds with React Query</li> </ol> <p>The pipeline went from returning ~34 articles <br> to ~250 articles after fixing these stages.</p> <h2> The biggest lesson </h2> <p>The health dashboard showed all sources as "operational" <br> but the feed was nearly empty. Turned out the 24h <br> Breaking cutoff was dropping 75% of valid articles.</p> <p>Always log your pipeline stage by stage:</p> ai