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News

Medium
medium.com > @arpita.mishra0303 > moving-away-from-s3-athena-why-we-migrated-our-analytics-pipeline-to-postgresql-d96782ed21d6

Moving Away from S3 & Athena: Why We Migrated Our Analytics Pipeline to PostgreSQL

1+ hour, 51+ min ago   (29+ words) A real-world look at architecture redesign, ingestion layers, and performance wins in a Food-Tech SaaS …...

DEV Community
dev.to > shane11235 > turning-mermaid-er-diagrams-into-shareable-3d-schema-tours-nn8

Turning Mermaid ER diagrams into shareable 3D schema tours

7+ hour, 47+ min ago   (20+ words) Mermaid erDiagram is great for... Tagged with mermaid, sql, database, opensource....

DEV Community
dev.to > webmatrixlab > database-indexing-mistakes-that-are-quietly-killing-your-apps-performance-2l74

Database Indexing Mistakes That Are Quietly Killing Your App's Performance

12+ hour, 41+ min ago   (459+ words) Indexing is one of those topics every developer has heard of, most have used, and surprisingly few have actually reasoned through carefully. It's easy to add an index and move on — it's much harder to know whether that index is…...

DEV Community
dev.to > mecanik-dev > mainframe-migration-tools-what-works-and-what-fails-4k6l

Mainframe Migration Tools: What Works and What Fails

17+ hour, 32+ min ago   (1485+ words) This guide describes the categories of tooling that actually exist, what each one genuinely does well, and the specific places where each tends to fail on real workloads. It is written for the people who have to sign the business…...

DEV Community
dev.to > mehradsadeghi > mysql-overselling-why-select-isnt-enough-and-how-select-for-update-solves-it-m0p

MySQL Overselling: Why SELECT Isn't Enough and How SELECT... FOR UPDATE Solves It

20+ hour, 40+ min ago   (431+ words) Imagine you’re running an online store, there’s exactly one item left in stock. Two customers click... Tagged with database, mysql, backend, softwareengineering....

DEV Community
dev.to > mehradsadeghi > two-transactions-one-row-what-does-mysql-actually-let-you-see--52ga

Two Transactions, One Row: What Does MySQL Actually Let You See?

20+ hour, 41+ min ago   (554+ words) Two users, One database row, Both reading and writing at almost exactly the same time. Who sees... Tagged with database, mysql, softwareengineering, backend....

DEV Community
dev.to > hellogung > sql-vs-nosql-kenapa-postgresql-masih-jadi-swiss-army-knife-di-2026-471l

SQL vs NoSQL: Kenapa PostgreSQL Masih Jadi 'Swiss Army Knife' di 2026

23+ hour, 17+ min ago   (23+ words) Sering kali kita... Tagged with postgres, mongodb, database, backend....

Medium
medium.com > @cemdrman > ditch-h2-postgresql-repository-tests-with-testcontainers-and-serviceconnection-in-spring-boot-4-8cd5bd5367af

Ditch H2: PostgreSQL Repository Tests with Testcontainers and @ServiceConnection in Spring Boot 4

1+ day, 2+ hour ago   (204+ words) Your repository tests are green. Then production throws a column “metadata” is of type jsonb but expression is of type character varying…Continue reading on Medium » Ditch H2: PostgreSQL Repository Tests with Testcontainers and @ServiceConnection in Spring Boot 4 Your repository tests…...

DEV Community
dev.to > mislam-dev > day-8-relational-database-101-postgresql-internals-j9c

Day 8 - Relational Database 101 - PostgreSQL Internals

1+ day, 8+ hour ago   (1576+ words) একবার একটু technological দিকে আসি, আপনি যখন Facebook বা LinkedIn-এ কাউকে message করেন তখন সেটা সরাসরি তার কাছে send হয়। Reason হচ্ছে আপনারা connected। এখানে আপনি directly message ত…...

DEV Community
dev.to > khg5293 > why-parameterized-queries-matter-for-sql-security-1iem

Why Parameterized Queries Matter for SQL Security

1+ day, 8+ hour ago   (559+ words) SQL injection is one of the classic examples of what can happen when an application mixes user input directly into a database query. The underlying problem is simple. The application expects data. The database may interpret part of that data…...