InfoQ Homepage Architecture & Design Content on InfoQ
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Uber Migrates 75,000+ Test Classes from Junit 4 to Junit 5 Using Automated Code Transformation
Uber engineers migrated over 75,000 test classes from JUnit 4 to JUnit 5 using automated code transformation with OpenRewrite and internal orchestration. By enabling the JUnit Platform for dual execution with Bazel and validating changes through CI, the team modernized testing infrastructure while maintaining correctness at monorepo scale.
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Spring News Roundup: First Release Candidates of Boot, Security, Integration, Modulith, AMQP
There was a flurry of activity in the Spring ecosystem during the week of April 20th, 2026, highlighting the first release candidates of: Spring Boot, Spring Security, Spring Integration, Spring Modulith, Spring AMQP, Spring for Apache Kafka and Spring Vault.
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AWS Ends WorkMail and Moves App Runner to Maintenance Mode
AWS has recently announced that WorkMail will be discontinued and that App Runner will stop accepting new customers and move into maintenance mode. Several other less popular services and features are also entering maintenance or sunset phases, triggering concern and debate across the AWS community.
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Cloudflare Optimizes Edge Stack for High-Core CPUs instead of Large Cache
Cloudflare recently introduced its Gen 13 servers, marking a shift in how its network handles traffic. Instead of relying on large CPU caches for speed, the company redesigned its software to leverage many more processor cores working in parallel in its latest AMD-based servers.
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HashiCorp Vault 2.0 Marks Shift to IBM Lifecycle with New Identity Federation
HashiCorp has released Vault 2.0, moving to the IBM versioning and support model following its acquisition. The update introduces Workload Identity Federation for secret syncing without static credentials, SCIM 2.0 provisioning, and performance gains in the storage engine. It also prioritises identity-based security and certificate automation while removing legacy architectural components.
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Dropbox Collaborates with GitHub to Reduce Monorepo Size from 87GB to 20GB
Dropbox reduced its backend monorepo from 87GB to 20GB by optimizing Git delta compression in collaboration with GitHub. The changes improved clone times, CI performance, and developer velocity, highlighting how repository storage inefficiencies can impact large-scale engineering workflows.
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Cloudflare Sandboxes Reach General Availability, Giving AI Agents Persistent Isolated Environments
Cloudflare has released Sandboxes and Containers into general availability, providing persistent isolated Linux environments for AI agent workloads. New capabilities include secure credential injection via egress proxy, PTY terminal support, persistent code interpreters, filesystem watching, and snapshot-based session recovery. Active CPU pricing charges only for used cycles.
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Cloudflare Outlines MCP Architecture as Enterprises Confront Security and Governance Risks
Cloudflare has outlined a reference architecture for scaling Model Context Protocol (MCP) deployments across the enterprise, positioning centralized governance, remote server infrastructure, and cost controls as key requirements for production-ready agent systems.
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Anthropic Introduces Managed Agents to Simplify AI Agent Deployment
Anthropic introduces Managed Agents on Claude, a managed execution layer for agent-based workflows. It separates agent logic from runtime concerns like orchestration, sandboxing, state management, and credentials. The system supports long-running multi-step workflows with external tools, error recovery, and session continuity via a meta-harness architecture.
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Slack Rebuilds Notification System, Reports 5X Increase in Settings Engagement
Slack has rebuilt its notification system with a unified architecture that separates activity from delivery, improving consistency across platforms. The redesign simplifies preferences, preserves legacy settings through transformation, and resulted in a 5x increase in user engagement with notification settings along with reduced support tickets.
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Cloudflare Introduces Project Think: a Durable Runtime for AI Agents
Cloudflare's Project Think introduces a new framework for AI agents, shifting from stateless orchestration to a durable actor-based infrastructure. It features a kernel-like runtime enabling agents to manage memory and run code securely. Innovations include Fibers for checkpointing progress and a Session API for relational conversations, enhancing agent efficiency and resilience.
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Designing Memory for AI Agents: inside Linkedin’s Cognitive Memory Agent
LinkedIn introduces Cognitive Memory Agent (CMA), generative AI infrastructure layer enabling stateful, context-aware systems. It provides persistent memory across episodic, semantic, and procedural layers, supporting multi-agent coordination, retrieval, and lifecycle management. CMA addresses LLM statelessness and enables production-grade personalization and long-term context in AI applications.
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Java News Roundup: OpenJDK JEPs, Jakarta EE 12, Spring Framework, Micrometer, Camel, JBang
This week's Java roundup for April 13th, 2026, features news highlighting: new OpenJDK JEPs; point releases of Apache Grails, Apache Camel and JBang; maintenances of Spring Framework that include resolutions to CVEs; first release candidates of Spring Data and Micrometer Metrics; beta releases of Eclipse Store and Eclipse Serializer; and an update on Jakarta EE 12.
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Meta Reports 4x Higher Bug Detection with Just-in-Time Testing
Meta introduces Just-in-Time (JiT) testing, a dynamic approach that generates tests during code review instead of relying on static test suites. The system improves bug detection by ~4x in AI-assisted development using LLMs, mutation testing, and intent-aware workflows like Dodgy Diff. It reflects a shift toward change-aware, AI-driven software testing in agentic development environments.
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AWS Launches Agent Registry in Preview to Govern AI Agent Sprawl across Enterprises
AWS released Agent Registry in preview as part of Amazon Bedrock AgentCore, providing a centralized catalog for discovering, governing, and reusing AI agents, tools, and MCP servers across organizations. The registry indexes agents regardless of where they run and supports both MCP and A2A protocols natively. Microsoft, Google Cloud, and the ACP Registry offer competing solutions.