Systems | Development | Analytics | API | Testing

Refresh the page, lose signal, switch tabs. Users expect the AI conversation to still be there when they return, with the answer picking up where it left off. Resumable token streaming makes that possible: a returning client catches up with the in-progress response instead of starting over. Making a stream resumable is an architecture decision. Starting generation, storing the response, and delivering it need to happen in separate parts of your stack.

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.

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.

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.

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.

A single Multiple Listing Service (MLS) record rarely stays in one place. The same listing feeds the search index, the map, the detail page, analytics, and the public API, so one incorrect value can propagate to multiple downstream surfaces that consume the same source data. A correction made in one system does not necessarily propagate to every downstream surface that consumed the original value.

When scaling an application to handle higher traffic, performance stalls or database errors often trace back to database connection pools running on default or generic settings that buckle under real-world load. The result? Connection timeouts, resource exhaustion, and users facing delays while the backend struggles. Establishing a new database connection can take 50 to 100 milliseconds per request, and multiplying that overhead by thousands of concurrent users can overwhelm infrastructure.

HTTP/3 load testing requires more than updating legacy scripts. The move from TCP to UDP-based QUIC changes how traffic is generated and validated. Many popular tools, such as k6, default to older protocols unless HTTP/3 is specifically negotiated and confirmed. To avoid testing fallback scenarios, pair your application-level load tests with QUIC-aware validation.

On a recent All-In podcast episode, David Friedberg described how his team at plant-breeding company Ohalo Genetics spent a weekend building an internal CRM using Claude Code, Cursor, and a handful of other AI coding tools. They stood it up, started using it, and it worked. Then the requests started. Can you add this feature? Can it sync with the tools we already use? What about access controls and data security?

Playwright test suites can remain unchanged while reporting results alongside Katalon Studio and manual testing activities in a centralized platform. This was the focus of the webinar Bring Playwright into Katalon True, delivered in two sessions on October 14, 2026. The webinar focused on how Playwright integrates into a broader testing workflow rather than comparing Playwright with Katalon. Playwright is a free, code-first framework for browser automation that many teams already use.