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Cloudsoft Zone guides

Guides for developers and founders

Tutorials, explainers, reviews and checklists on AI, development, SaaS and cloud.

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  • Rows of servers in tall racks inside a data centre with cabling overhead

    Architecture guideDevelopment

    Consistent API error responses with RFC 9457 Problem Details

    Every HTTP API needs an error format, and most teams invent their own. RFC 9457 defines a standard one: application/problem+json. This guide explains its members, shows validation and business-rule examples, and covers design and security rules for adopting it.

    By Cloudsoft Zone

  • Rows of open black server racks in an empty data centre room with a raised tiled floor

    Resource guideCodeIgniter

    CodeIgniter 4 production deployment and security checklist

    A practical pre-launch checklist for CodeIgniter 4.7 apps: production environment, document root, Composer and optimisation, HTTPS and secure headers, CSRF and sessions, file uploads, proxies and logging, with commands to verify each item.

    By Cloudsoft Zone

  • Laptop on a table at a hackathon showing source code in a dark-themed editor, next to a paper coffee cup, with participants seen from behind

    Interview preparationInterview questions

    React interview questions and answers for React 19.3

    17 React interview questions with model answers: keys, state snapshots, effects, refs, Actions, React Compiler, Server Components and what React 19.3 added.

    By Cloudsoft Zone

  • Row of server racks with network cabling in the NOIRLab headquarters server room

    Architecture guideSaaS and Cloud

    Multi-tenant SaaS data isolation: shared tables, schemas or databases

    How to choose between shared tables, schema per tenant and database per tenant for a SaaS, and how to enforce isolation in shared tables with PostgreSQL 18 row-level security and transaction-scoped tenant context in Node.js.

    By Cloudsoft Zone

  • Rack-mounted servers with blinking status lights and neatly bundled network cables

    Troubleshooting guideMagento

    Magento cron and indexers: how to set them up and fix common problems

    Missing order emails, stale prices and invalid indexers usually trace back to cron. Learn how Magento cron and indexers work together, how to install the crontab, and how to diagnose and fix the most common failures.

    By Cloudsoft Zone

  • Server room with rows of racks and overhead cable trays under bright lighting

    Resource guideSaaS and Cloud

    Cloud cost control checklist for small teams on AWS and Google Cloud

    A practical checklist to catch cloud cost surprises within a day: budgets and anomaly alerts, Google Cloud spend caps, cost allocation tags, the usual leaks such as public IPv4 and NAT gateways, automated guardrails and a monthly review.

    By Cloudsoft Zone

Showing 12 articles