WWaqas Shahid10h ago · 4 min readSQL Joins Explained: INNER, LEFT, RIGHT, and FULL, With ExamplesIntroduction Most real data lives in more than one table. Users live in one table, orders in another, and the link between them is usually an ID, like user_id. A join combines rows from two tables baspracticaldevblog.hashnode.dev
SStephen Muiruri19h ago · 22 min readBackend Ecosystem Explained Simply: Follow One RequestIf you've ever searched for a backend development roadmap, you've probably encountered an overwhelming list of technologies: Spring Boot, Docker, Kubernetes, Redis, Kafka, PostgreSQL, Jenkins, AWS, Pr1stephen3.hashnode.dev
AAbhishek Jaiswal11h ago · 9 min readManaged Postgres pricing in 2026: eight providers comparedManaged Postgres is priced in more ways than almost any other cloud product. Some providers sell a fixed instance with storage on top, some include storage up to a cap, one meters memory by the hour, ownkube.hashnode.dev
VVisuaLeaf - MongoDB Data Workspace13h ago · 22 min readBest Database Design Tools for 2027: Windows, macOS & LinuxMost database trouble starts with a schema nobody ever drew. A handful of tables turn into fifty, someone adds a foreign key late on a Friday, and a few months later nobody can explain how orders connvisualeaf.hashnode.dev
YYenosh V15h ago · 12 min readBeyond Basic Filters: A Modern Guide to Interactive Tableau Dashboards and Smarter Data AnalysisIntroduction: Turning Complex Data into Actionable Insights Modern businesses generate enormous volumes of data from sales transactions, customer interactions, supply chains, financial systems, and diyenosh.hashnode.dev
WWaseem Anjum16h ago · 15 min readPostgres Full-Text Search vs Elasticsearch vs Meilisearch: BM25 Benchmarked (2026)Postgres full-text search can now rank results as well as Elasticsearch, as long as you use a BM25 extension instead of the built-in ts_rank. I loaded three public BEIR retrieval datasets (5,183 to 17fabwaseem.hashnode.dev
ZZenith Eclipse Co17h ago · 4 min readReserve the Last Lot Once: PostgreSQL Concurrency for Commodity InventoryTwo order screens show 100 bags available. Each operator reserves 70. Both screens passed their availability check, yet the warehouse now has commitments for 140 bags. This is a concurrency bug, not azenitheclipse.hashnode.dev
UUptime Architect1d ago · 13 min readCheckpoint Not Complete: Every Commit Waits, and the SQL Is FineThe nightly batch used to finish in twenty minutes. Now it takes an hour, and during that hour the application stutters: every few seconds, every session that writes anything (an order, a login timestuptimearchitect.hashnode.dev
ZZenith Eclipse Co1d ago · 6 min readA Supplier Name Is Not a Primary Key: Designing a Commodity Supplier RegistryA procurement database can contain three supplier records and still be dealing with one legal entity. One import uses an abbreviated trading name, another preserves the registered name, and a third trzenitheclipse.hashnode.dev
RRONI DAS1d ago · 9 min readOne Database Node Was Left Alive. It Said 420 Rows. The Real Number Was 421.The last node standing in our test cluster was asked one question: how many rows are in this table? It answered 420. A few seconds earlier, the cluster had confirmed write number 421. Nothing was broksystemdesignacademy.hashnode.dev
