Systems | Development | Analytics | API | Testing

RSpec Tests in Ruby on Rails: Every Spec Type Explained (2026)

RSpec is the most widely used testing framework for Ruby on Rails. With the rspec-rails gem (v8.x, supporting Rails 7.2–8.x), you write model specs for business logic, request specs for controllers and APIs, and system specs for browser flows — plus mailer and job specs. Run the suite with bundle exec rspec. In the first part of this series, we looked at the basics of RSpec and how well it works with Behavior Driven Development in Ruby.

Load Test One Endpoint, Watch the Rest

What happens to transaction posting when statement traffic gets expensive? That’s the question a bank’s platform team actually needs answered before a busy month-end. It’s also a question most load tests can’t ask, because they turn one dial for the whole recording. Statements get heavier, posting gets heavier, and the average latency across both looks fine right up until customers can’t move money.

How Agentic Performance Testing differs from co-pilots and AI assistants

Most AI tools are designed as one assistant or co-pilot answering one prompt, but Tricentis Agentic Performance Testing is built differently. In this video, Product Marketing Manager Twan Koot explains the two pieces behind it: purpose-built tools and a team of seven specialized agents, each designed to do a performance tester’s job the way it should be done. Key highlights.

SwiftUI DatePicker & ColorPicker Tutorial: How to Pick Dates and Colors #Shorts #swiftuitutorial

SwiftUI DatePicker and ColorPicker tutorial: how to pick dates and colors in SwiftUI, choose a DatePicker style (compact, graphical or wheel), show only the date or only the time with displayedComponents, and hide opacity with supportsOpacity. Both are system pickers that bind to a state property: DatePicker to a Date, ColorPicker to a Color. This Short shows each one in a real iPhone app in the iOS Simulator, with the exact code.

7 Best EDI File Viewers and X12 Parsers in 2026

Understanding EDI files shouldn't require specialized expertise or expensive enterprise software. Whether you're troubleshooting a single healthcare claim file, validating daily purchase orders, or building automated data pipelines, the right EDI viewer can transform cryptic X12 code into actionable business intelligence.

EDI 820 Premium Payment File: Format, Key Segments, and 834 Reconciliation

Imagine receiving a carrier suspense file showing 200 premium payment records that couldn't be matched to members in the enrollment system. Your AR team is now manually cross-referencing spreadsheets to figure out which enrollments the carrier missed, which terminations payroll didn't catch, and which IDs don't match. This scenario plays out monthly at organizations where payment/enrollment mismatches create expensive manual rework.

Cautionary Tales from the Age of AI

Can AI agents actually fix production Kubernetes clusters, or are we just trapped in flashy AI marketing hype? In this Cloud Native Budapest session at Cloudera, Yurii Palamarchuk (Cloudera) breaks down why most AI demos fail in production, and Péter Megyesi shares how autonomous AI agents (Claude Code, kubectl) resolved a complex 6-year-old Ceph & Kubernetes outage.

Why Enterprise AI Context Lives in People's Heads, and How to Fix It

Why does context always seem to live in people's heads in enterprise organizations? According to Jessica Talisman, author of The Ontology Pipeline and founder of Contextually LLM, the answer is that organizations have invested heavily in data management for decades — and almost nothing in knowledge management. In this clip from Day 1 of our Semantic & Context Layer Series, Jessica joins Jane Smith and Sonny Rivera to untangle the terminology confusion around semantic layers, context layers, and memory and explain why the gap between data and knowledge is exactly where AI answers break down.