SSpinlab Studio2h ago · 6 min readDesigning Payment Statuses That Support Teams Can ExplainA payment provider says a deposit succeeded. The player’s balance has not changed. Support sees “pending,” while the finance export already includes the transaction. Which system is right? Each systemspinlabstudio.hashnode.dev
DDaniel Powley20h ago · 4 min readThe A-Z Weekly Wrap: 30th October 2026Welcome to this week’s atozazure weekly wrap for the 30th October 2026. Below are all the key platform changes, additions and retirements for the past week. AI & Machine Learning Microsoft Copilot Hablog.atozazure.com
AAnthony Emmanuella Mmasinachi8h ago · 12 min readAgata Proxima: PostgreSQL Security, Tenant Isolation & Database Access VerificationIntroducing Agata Proxima: PostgreSQL Security, Tenant Isolation & Data Protection A new security platform for SaaS companies, developers, and organizations that need stronger control over how their Phttpsagataproximacom.hashnode.dev
Jjaberadam200120h ago · 11 min readMoney Rounding Errors: Allocate the Remainder, Don't DivideHere's a query worth running against your production database this week: -- Orders whose installments no longer add up to the order total SELECT o.id, o.total_minor, SUM(i.amount_minor) AS installment11Asimplyexplained.hashnode.dev
GGowtham Muthuvel1d ago · 17 min readIdempotency Keys in Spring Boot: Making POST Safe to RetryI fired the same POST /orders request 20 times at the same instant, with the same Idempotency-Key header, at three versions of one Spring Boot endpoint. Here is what landed in the database: /v1/ordersgowthammuthuvel.hashnode.dev
ZZyVOP1d ago · 10 min readPostgres Performance Basics: Reading EXPLAIN Output and Fixing Slow QueriesA slow query is a guess until you see its plan. Postgres will tell you exactly how it intends to run a query and, with one extra keyword, how the run actually went. Learning to read that output is oneblog.zyvop.com
CCruxtab Technologies Pvt. Ltd.1d ago · 3 min readManaging Uploaded File Cleanup in AWS S3Storing uploaded files is only one part of building a reliable file-management system. Applications also need to consider what happens when the records associated with those files are deleted. Withoutcruxtab-technologies.hashnode.dev
CCardFlow1d ago · 4 min readDesigning a Data Feed That Admits When It Is StaleAn upstream API is late. Your cache still has the last successful response. Should the page show it? Sometimes yes. A delayed weather observation or a historical chart can still be useful. A checkout everyday-systems-notes.hashnode.dev
WWaseem Anjum2d ago · 18 min readMongoDB vs Postgres JSONB in 2026: Inserts, Lookups, Updates and Storage, BenchmarkedMost "MongoDB vs Postgres JSONB" debates are fought with benchmarks from 2014 and opinions from Twitter. I run both in my day job and side projects, so I put the current versions, MongoDB 9.0.4 (releafabwaseem.hashnode.dev
ZZyVOP2d ago · 5 min readCaching Strategies Compared: Cache-Aside, Write-Through, and Write-BehindEvery cache forces you to answer one question: when data changes, who updates the cache, and when? Reads are the easy half. The write path is where caches go stale, lose data, or slow your app down. T2blog.zyvop.com
