https://yurlie.app/blog In-depth technical guides for software engineers, DevOps, and cloud architects covering networking, CIDR subnetting, JSON standards, JWT security, and UUID database performance. en-us Thu, 17 Sep 2026 14:00:08 GMT https://yurlie.app/blog/cidr-calculator-guide-networking https://yurlie.app/blog/cidr-calculator-guide-networking Master Classless Inter-Domain Routing (CIDR), IP range calculations, subnet masks, wildcard masks, and VPC network planning for AWS, GCP, and Kubernetes. Mon, 03 Aug 2026 11:03:08 GMT network admin@yurlie.app (Yurlie Editorial Team) https://yurlie.app/blog/uuid-v4-vs-uuid-v7-database-performance https://yurlie.app/blog/uuid-v4-vs-uuid-v7-database-performance Discover why random UUID v4 causes severe database B-Tree index fragmentation and read/write degradation at scale, and how time-ordered UUID v7 provides zero-collision unique IDs with sequential sorting. Mon, 03 Aug 2026 11:03:08 GMT developer admin@yurlie.app (Yurlie Editorial Team) https://yurlie.app/blog/json-formatting-best-practices https://yurlie.app/blog/json-formatting-best-practices Learn modern JSON standards for REST & GraphQL APIs, common syntax pitfalls, data typing rules, payload optimization strategies, and schema validation. Mon, 03 Aug 2026 11:03:08 GMT json admin@yurlie.app (Yurlie Editorial Team) https://yurlie.app/blog/aws-vpc-subnet-planning-best-practices-for-24-to-28-networks https://yurlie.app/blog/aws-vpc-subnet-planning-best-practices-for-24-to-28-networks Learn how to design scalable Amazon Web Services (AWS) Virtual Private Cloud (VPC) subnet architectures, allocate CIDR blocks, handle IP reservation rules, and avoid IP exhaustion. Mon, 03 Aug 2026 11:11:47 GMT network admin@yurlie.app (Yurlie Editorial Team) https://yurlie.app/blog/what-does-0-0-0-0-mean-a-practical-guide https://yurlie.app/blog/what-does-0-0-0-0-mean-a-practical-guide Understand what 0.0.0.0 actually means in networking, from default routes to server binding, and why it behaves differently depending on context. Sat, 29 Aug 2026 14:15:16 GMT network admin@yurlie.app (Yurlie Editorial Team) https://yurlie.app/blog/what-is-a-uuid-and-when-should-you-use-one https://yurlie.app/blog/what-is-a-uuid-and-when-should-you-use-one Understand what a UUID is, how its versions differ, and when a UUID is the right choice over an auto-incrementing ID for your database. Mon, 24 Aug 2026 11:16:30 GMT developer admin@yurlie.app (Yurlie Editorial Team) https://yurlie.app/blog/vlsm-explained-variable-length-subnet-masking https://yurlie.app/blog/vlsm-explained-variable-length-subnet-masking Learn how Variable Length Subnet Masking lets you carve a single network into differently sized subnets, with a full worked allocation example. Sun, 16 Aug 2026 07:44:57 GMT developer admin@yurlie.app (Yurlie Editorial Team) https://yurlie.app/blog/what-is-caching-in-distributed-backend-systems https://yurlie.app/blog/what-is-caching-in-distributed-backend-systems Understand how caching works in distributed backend systems, from private vs shared cache to cache-aside patterns, TTL, and real performance numbers. Sun, 16 Aug 2026 06:46:33 GMT developer admin@yurlie.app (Yurlie Editorial Team) https://yurlie.app/blog/zero-trust-is-mature-on-paper-not-yet-in-practice https://yurlie.app/blog/zero-trust-is-mature-on-paper-not-yet-in-practice CISA and Microsoft's own Zero Trust maturity models converge on the same taxonomy (both traced back to NIST SP 800-207) but disagree on basic structure, one uses 5 pillars and 4 stages, the other uses 6 elements and 3 stages. CISA's own document lists what it doesn't cover (OT, IoT subsets, incident response detail, AI/ML), and Microsoft's own paper admits most organizations still sit at the lowest "Traditional" stage. Real-world evidence backs this up: Gartner projected 75% of federal agencies would miss full zero trust implementation past 2026, DoD had only completed 14% of its 152-task roadmap by late 2024, and the OMB's hard September 2024 deadline quietly became an open-ended metric instead of a completed milestone. Conclusion: Zero Trust is mature as a concept, not yet mature as a practice. Sun, 09 Aug 2026 12:44:42 GMT developer admin@yurlie.app (Yurlie Editorial Team) https://yurlie.app/blog/how-far-has-zero-trust-actually-evolved https://yurlie.app/blog/how-far-has-zero-trust-actually-evolved From early-2000s de-perimeterization to becoming an official standard via NIST SP 800-207 (2020), ZTA research exploded after 2020 but started slowing in 2023-2024, signaling it's approaching a plateau. ZTA has spread into nearly every sector (healthcare, IoT, finance, military, energy), but checked against 9 security dimensions (authentication, authorization, access control, cryptography, etc.), most implementations only touch 3-5 of them. Strongest: authentication and access control. Weakest: automated orchestration, lightweight cryptography for IoT, and regulatory compliance (GDPR/HIPAA). Thu, 06 Aug 2026 06:12:37 GMT developer admin@yurlie.app (Yurlie Editorial Team) https://yurlie.app/blog/processing-large-json-payloads-streaming-vs-in-memory https://yurlie.app/blog/processing-large-json-payloads-streaming-vs-in-memory Compare streaming JSON parsers (Jackson, ijson, Go json.Decoder) to in-memory deserialization, and see how NDJSON avoids Node.js V8 heap OOM crashes. Thu, 17 Sep 2026 11:55:33 GMT json admin@yurlie.app (Yurlie Editorial Team)