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Observability, SRE & FinOps
Metrics, tracing, logs, SLOs, incident response, and cloud cost control.
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Biometric Messaging Logins
2+ hour, 6+ min ago (188+ words) Biometric messaging logins are becoming more widely adopted as WhatsApp expands passkey authentication across its platform. More than one billion people have set up a passkey, allowing users to access their accounts with a fingerprint, facial recognition or device… Biometric…...
SaaS Login 2FA: SMS OTP, Authenticator App, and Email Code Operations
2+ hour, 30+ min ago (257+ words) Email feels easy because most marketplaces already send order mail. That intuition is misleading here: there is no hosted email OTP operation, so the application must generate the code, store it safely, expire it, rate-limit attempts, prevent replay, and verify…...
The 10 best free AI visibility checkers
1+ day, 3+ hour ago (1437+ words) Ten free tools that show whether ChatGPT, Gemini, Perplexity, Claude and Google's AI features know your brand, what each one actually measures, and where the free version stops. Arobis AI is the only one here that grades your site's readiness;…...
Batch Email vs SMS Event Notifications — Own Templates and Poll Recipient Status
8+ hour, 34+ min ago (401+ words) This choice creates more application code. It also gives the responder at 3am an answer to the only useful question: what page fired, and which properties and recipients are actually stranded? A provider dashboard can help an investigation, but it is…...
Things that broke in my side project that no test caught (a hosted log service, built solo)
10+ hour, 43+ min ago (259+ words) I've been building a small hosted log service on the side. Your program sends plain-text log lines over HTTPS, you read them in a dashboard, get a Telegram message when a run gets noisy, and can ask an AI assistant…...
Auditable OTP Delivery: Beginner 2FA Login Architecture with SMS and Email
10+ hour, 38+ min ago (775+ words) This framing changes the beginner architecture. SMS-primary and email-fallback sounds like a routing rule; operationally, it is a small state machine whose decisions may later need to explain who was contacted, why a second channel was used, which evidence authorized…...
Design a Notification Service That Does Not Lose Messages
14+ hour, 44+ min ago (212+ words) Durable queues, retries, preferences, deduplication, provider failures, and delivery guarantees for email, SMS, push, and in-app… Design a Notification Service That Does Not Lose Messages Durable queues, retries, preferences, deduplication, provider failures, and delivery guarantees for email, SMS, push, and…...
Codecov went down today over an expired certificate: how TLS renewal actually fails
15+ hour, 7+ min ago (1223+ words) This morning, Codecov's status page lit up. Frontend and backend, both down. The cause, identified within two minutes of the first update: an expired SSL certificate. The incident timeline, which begins at 06:53 UTC today, goes from "investigating" to "identified: SSL…...
Indicators' summary
18+ hour, 55+ min ago (51+ words) Advertigo SA is a media company which operates on the Internet and in the press market. The firm offers thematic websites for the gaming and music industries. It publishes magazine Teraz Rock, and operates internet portals PPE.pl and terazmuzyka....
Our own forwarder was laundering spam past Gmail, and the fix flags rather than drops
23+ hour, 7+ min ago (551+ words) It works well, and it had a consequence I did not think about for months. When the webhook forwards a message, it sends a new email from our own domain, through our own provider, signed with our own DKIM key....