--- title: Best Tech Lead Digest posts — June 2025 | daily.dev description: The most upvoted Tech Lead Digest posts from June 2025, curated by the daily.dev community. canonical: https://daily.dev/sources/techleaddigest/best-of/2025/06 twitter:card: summary_large_image twitter:site: @dailydotdev og:url: https://daily.dev/sources/techleaddigest/best-of/2025/06 og:type: website og:site_name: daily.dev og:title: Best Tech Lead Digest posts — June 2025 | daily.dev og:description: The most upvoted Tech Lead Digest posts from June 2025, curated by the daily.dev community. og:image: https://media.daily.dev/image/upload/s--VAY5ToZt--/f_auto/v1724209435/public/daily.dev%20-%20open%20graph --- # Best of Tech Lead Digest — June 2025 1. 1 [](https://daily.dev/posts/smart-people-don-t-chase-goals-they-create-limits-gzwmm9ukx "Smart People Don't Chase Goals; They Create Limits") Article Tech Lead Digest · 1y Smart People Don't Chase Goals; They Create Limits Traditional goal-setting often creates misalignment and focuses on outcomes rather than process. Smart people instead work within constraints - self-imposed boundaries that guide decisions without locking in specific predictions. Constraints like 'never work with clients who drain me' or 'only build products I can explain to a teenager' provide adaptive frameworks that respond to feedback and maintain authenticity. This approach proves more effective in ambiguous, creative domains where rigid goals become brittle and counterproductive. 102 8 2. 2 [](https://daily.dev/posts/the-ultimate-guide-to-jwt-vulnerabilities-and-attacks-with-exploitation-examples--1vtgdsaa9 "The Ultimate Guide to JWT Vulnerabilities and Attacks (with Exploitation Examples)") Article Tech Lead Digest · 1y The Ultimate Guide to JWT Vulnerabilities and Attacks (with Exploitation Examples) JWT vulnerabilities pose serious security risks in modern web applications. Common attacks include signature bypass, algorithm confusion (switching from RS256 to HS256), weak secret brute-forcing, and injection attacks through header parameters like 'kid' and 'jku'. The guide covers exploitation techniques for each vulnerability type, from trivial signature removal to sophisticated ECDSA psychic signature attacks. Key defense strategies include strict algorithm validation, secure key management, input sanitization, and proper signature verification implementation. 43 1 3. 3 [](https://daily.dev/posts/when-google-sneezes-the-whole-world-catches-a-cold-2awgfmuwf "When Google Sneezes, the Whole World Catches a Cold") Article Tech Lead Digest · 1y When Google Sneezes, the Whole World Catches a Cold A detailed analysis of a major Google Cloud IAM outage that cascaded across multiple services including Cloudflare and Anthropic. The incident began with an IAM backend rollout issue at 10:50 AM PT, causing authentication failures across GCP products. Cloudflare's Workers KV, which depends on Google Cloud storage, failed next, affecting Access, WARP, and Zero Trust features. Anthropic disabled file uploads to manage error rates. Full recovery took over 7 hours, with some specialized services like Vertex AI requiring additional time. The analysis includes a detailed timeline, impact assessment, and lessons learned about dependency chains, control plane failures, and recovery patterns in distributed systems. 31 4. 4 [](https://daily.dev/posts/sla-vs-slo-cjd472lnq "SLA vs SLO") Article Tech Lead Digest · 1y SLA vs SLO SLA (Service Level Agreement) and SLO (Service Level Objective) are often confused but serve different purposes. SLAs are legal contracts with external customers that include financial consequences for breaches, while SLOs are internal targets used by engineering teams to guide service optimization. The key difference lies in accountability: SLAs have legal ramifications, while SLOs typically result in operational constraints like blocking deployments when error budgets are exhausted. SLAs are external-facing, less frequently revised, and simpler in technical detail but more complex legally. SLOs are internal, more technically detailed, and can be adjusted more frequently based on engineering needs. 25 1 5. 5 [](https://daily.dev/posts/the-problem-with-shadow-development-xquwiybqk "The problem with shadow development") Article Tech Lead Digest · 1y The problem with shadow development Shadow development occurs when engineers bypass official company tools like Jira in favor of unauthorized alternatives such as Google Sheets, Notion, or Discord for project tracking. This happens because developers find official tools inefficient and prioritize process over progress. While this creates security risks and communication gaps, successful managers embrace flexibility by allowing teams to choose tools that match their workflow, leading to improved productivity and morale. The key is establishing open communication about tool preferences before unauthorized solutions are implemented. 13 [See all Tech Lead Digest archives](/sources/techleaddigest/best-of) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@graph":[{"@type":"CollectionPage","@id":"https://daily.dev/sources/techleaddigest/best-of/2025/06#page","url":"https://daily.dev/sources/techleaddigest/best-of/2025/06","name":"Best Tech Lead Digest Posts — June 2025","description":"The most upvoted Tech Lead Digest posts from June 2025, curated by the daily.dev community.","isPartOf":{"@type":"WebSite","url":"https://daily.dev"}},{"@type":"ItemList","@id":"https://daily.dev/sources/techleaddigest/best-of/2025/06#items","numberOfItems":5,"itemListElement":[{"@type":"ListItem","position":1,"url":"https://daily.dev/posts/smart-people-don-t-chase-goals-they-create-limits-gzwmm9ukx","name":"Smart People Don't Chase Goals; They Create Limits"},{"@type":"ListItem","position":2,"url":"https://daily.dev/posts/the-ultimate-guide-to-jwt-vulnerabilities-and-attacks-with-exploitation-examples--1vtgdsaa9","name":"The Ultimate Guide to JWT Vulnerabilities and Attacks (with Exploitation Examples)"},{"@type":"ListItem","position":3,"url":"https://daily.dev/posts/when-google-sneezes-the-whole-world-catches-a-cold-2awgfmuwf","name":"When Google Sneezes, the Whole World Catches a Cold"},{"@type":"ListItem","position":4,"url":"https://daily.dev/posts/sla-vs-slo-cjd472lnq","name":"SLA vs SLO"},{"@type":"ListItem","position":5,"url":"https://daily.dev/posts/the-problem-with-shadow-development-xquwiybqk","name":"The problem with shadow development"}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Sources","item":"https://daily.dev/sources"},{"@type":"ListItem","position":3,"name":"Tech Lead Digest","item":"https://daily.dev/sources/techleaddigest"},{"@type":"ListItem","position":4,"name":"Best of","item":"https://daily.dev/sources/techleaddigest/best-of"},{"@type":"ListItem","position":5,"name":"June 2025"}]}]} ```