Exploring backend engineering, distributed systems, and database internals. Deep dives into system design, performance optimization, and scalable architecture.https://www.adiagr.com/https://www.adiagr.com/projects/07-saas-postgres-multitenancy-patterns/https://www.adiagr.com/projects/07-saas-postgres-multitenancy-patterns/A practical guide to choosing the right multi-tenancy model for your SaaS with real-world trade-offs, performance considerations, and decision frameworksMon, 02 Feb 2026 00:00:00 GMThttps://www.adiagr.com/projects/07-saas-postgres-intro/https://www.adiagr.com/projects/07-saas-postgres-intro/Start your SaaS journey with PostgreSQL by understanding the fundamental architecture decisions that will shape your application's scalability and data isolationMon, 02 Feb 2026 00:00:00 GMThttps://www.adiagr.com/projects/03-auth-oauth-tokens/https://www.adiagr.com/projects/03-auth-oauth-tokens/Exploring access tokens, refresh tokens, and secure authentication flows in OAuth 2.0 for modern web applicationsFri, 28 Mar 2025 00:00:00 GMThttps://www.adiagr.com/projects/03-auth-jwts/https://www.adiagr.com/projects/03-auth-jwts/Understanding JSON Web Tokens (JWTs) and their role in modern authentication and authorization systemsThu, 27 Mar 2025 00:00:00 GMThttps://www.adiagr.com/projects/03-auth-vs-auth/https://www.adiagr.com/projects/03-auth-vs-auth/Exploring the critical differences between authentication (who you are) and authorization (what you can do) in modern web securityWed, 26 Mar 2025 00:00:00 GMThttps://www.adiagr.com/projects/02-navigation-postgresql-part-vii/https://www.adiagr.com/projects/02-navigation-postgresql-part-vii/Learn how to think about query optimizations in PostgreSQL with practical examples.Mon, 10 Mar 2025 00:00:00 GMThttps://www.adiagr.com/projects/02-navigating-postgresql-part-vi/https://www.adiagr.com/projects/02-navigating-postgresql-part-vi/Learn how PostgreSQL uses different join strategies, this guide explains nested loop join, hash join, and merge join with practical Explain Analyze examples.Sun, 09 Mar 2025 00:00:00 GMThttps://www.adiagr.com/projects/02-navigating-postgresql-part-v/https://www.adiagr.com/projects/02-navigating-postgresql-part-v/Learn how PostgreSQL uses different index scan types, this guide explains index, index-only, and bitmap scans with practical Explain Analyze examples.Sat, 08 Mar 2025 00:00:00 GMThttps://www.adiagr.com/projects/02-navigating-postgresql-part-iv/https://www.adiagr.com/projects/02-navigating-postgresql-part-iv/Learn how to use the explain command to understand how PostgreSQL executes your queries, and how to optimize your queries for better performance.Mon, 03 Mar 2025 00:00:00 GMThttps://www.adiagr.com/projects/02-navigating-postgresql-part-iii/https://www.adiagr.com/projects/02-navigating-postgresql-part-iii/Dive deep into PostgreSQL's storage architecture to understand how pages and blocks form the foundation of database performance and efficiencySat, 01 Mar 2025 00:00:00 GMThttps://www.adiagr.com/projects/02-navigating-postgresql-part-ii/https://www.adiagr.com/projects/02-navigating-postgresql-part-ii/Unlock the power of PostgreSQL Views - your secret weapon for simplifying complex queries, enhancing security, and creating elegant database abstractionsSat, 28 Dec 2024 00:00:00 GMThttps://www.adiagr.com/projects/02-navigating-postgresql-part-i/https://www.adiagr.com/projects/02-navigating-postgresql-part-i/Dive into the powerful world of Common Table Expressions (CTEs) and learn how to use them to transform how you structure and optimize complex queriesMon, 23 Dec 2024 00:00:00 GMThttps://www.adiagr.com/projects/01-postgres-search-arrays/https://www.adiagr.com/projects/01-postgres-search-arrays/Learn how to efficiently search arrays in PostgreSQL using the ANY operator and GIN indexes for better performanceSun, 17 Mar 2024 00:00:00 GMT