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Architect's Tech Stack
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Architect's Tech Stack

Java backend, microservices, distributed systems, containerized programming, and more.

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Architect's Tech Stack
Architect's Tech Stack
Oct 24, 2026 · Mobile Development

OkHttp 5.5 Upgrade: Real Value Lies in 5.2–5.4 Features, Not ECH

This article analyzes OkHttp 5.5's features, concluding that Encrypted Client Hello (ECH) requires Android 17 and offers limited immediate value, while versions 5.2–5.4 deliver practical upgrades like Zstd compression, 16KB page alignment, enhanced interceptor permissions, DNS-over-HTTPS, and QUERY method support, recommending a staged upgrade starting with 5.4.

AndroidDNS-over-HTTPSECH
0 likes · 11 min read
OkHttp 5.5 Upgrade: Real Value Lies in 5.2–5.4 Features, Not ECH
Architect's Tech Stack
Architect's Tech Stack
Oct 23, 2026 · Information Security

Java CVE-2026-91403: eMudhra CA Private Keys (4,56,115) Break Trust Chain

A critical Java vulnerability (CVE-2026-91403, CVSS 9.1) stems from three eMudhra intermediate CA private keys with absurdly small values (4, 56, 115) on the P-384 curve, allowing instant private key recovery and forged certificates; browsers blocked them via preloaded revocation lists, but Java's JSSE defaults to skipping revocation checks, requiring JDK upgrades or manual blocked.certs updates and enabling revocation checking.

CVE-2026-91403Java securityPKIX
0 likes · 15 min read
Java CVE-2026-91403: eMudhra CA Private Keys (4,56,115) Break Trust Chain
Architect's Tech Stack
Architect's Tech Stack
Oct 22, 2026 · Databases

MySQL 9.7 LTS Deep Dive: Free Enterprise Features, Hypergraph Optimizer, JSON DML

MySQL 9.7 LTS brings five enterprise features to community edition, introduces the Hypergraph optimizer with 22% geometric mean speedup on TPC-DS, adds DML support to JSON Duality Views, improves rolling upgrades and container CPU detection, and switches password hashing to PBKDF2-SHA512, while vector search remains experimental.

Hypergraph optimizerJSON Duality ViewLTS
0 likes · 10 min read
MySQL 9.7 LTS Deep Dive: Free Enterprise Features, Hypergraph Optimizer, JSON DML
Architect's Tech Stack
Architect's Tech Stack
Oct 19, 2026 · Databases

MySQL 9.7 LTS: OpenTelemetry, JSON Duality Writes & Hypergraph Optimizer Now in Community

MySQL 9.7.0 LTS brings enterprise-grade OpenTelemetry tracing, writable JSON Duality Views, and the Hypergraph optimizer to the community edition, while changing versioning to year-month format; the article details configuration steps, upgrade caveats, and default changes affecting replication and InnoDB logging.

Hypergraph optimizerJSON Duality ViewLTS
0 likes · 11 min read
MySQL 9.7 LTS: OpenTelemetry, JSON Duality Writes & Hypergraph Optimizer Now in Community
Architect's Tech Stack
Architect's Tech Stack
Oct 16, 2026 · Backend Development

Netty 4.2: Architectural Overhaul with io_uring, Adaptive Allocator, and Breaking Changes

Netty 4.2 delivers a major architectural rewrite after 10 years: event loops decoupled from transports via IoHandlerFactory, io_uring graduates from incubator with kernel-level batching, the default memory allocator switches to adaptive magazine-style caching, and TLS hostname verification becomes strict by default — all requiring careful migration due to API breakages and classpath incompatibility.

Java networkingMemory ManagementNetty
0 likes · 10 min read
Netty 4.2: Architectural Overhaul with io_uring, Adaptive Allocator, and Breaking Changes
Architect's Tech Stack
Architect's Tech Stack
Oct 14, 2026 · Backend Development

Arthas 4 + AI: 29 JVM Diagnostic Commands Now Automated via MCP

Arthas 4 introduces an experimental MCP Server module that wraps its 29 diagnostic commands as AI-callable tools via JSON-RPC 2.0 over StreamableHTTP, enabling AI-assisted JVM troubleshooting (e.g., CPU 98% analysis) while preserving bytecode instrumentation; configuration, tool categories, security caveats, and a real-world debugging walkthrough are detailed.

AI-assisted debuggingArthasJVM diagnostics
0 likes · 12 min read
Arthas 4 + AI: 29 JVM Diagnostic Commands Now Automated via MCP
Architect's Tech Stack
Architect's Tech Stack
Oct 14, 2026 · Artificial Intelligence

Why I Choose Codex Over Other AI Coding Tools: Instant Interrupt & Parallel Agents

After two years testing AI coding tools, the author recommends Codex for its instant interrupt feature, parallel agent execution via git worktree, persistent project rules via AGENTS.md, cloud-based background tasks, sandbox safety, and cost-effective model selection, while noting caveats like reasoning intensity limits and AGENTS.md size constraints.

AGENTS.mdAI coding assistantCodex
0 likes · 9 min read
Why I Choose Codex Over Other AI Coding Tools: Instant Interrupt & Parallel Agents
Architect's Tech Stack
Architect's Tech Stack
Oct 10, 2026 · Databases

Why WeChat Stores Billions of Messages in SQLite: The Mobile Database Trade-offs

WeChat uses SQLite for chat storage because its embedded, zero-process design fits mobile constraints; ACID transactions and B+tree indexes ensure message durability and fast pagination; WAL enables concurrent reads/writes; SQLCipher encrypts per-device; sharding by session mitigates single-writer limits, offering a blueprint for local-first apps.

ACIDB-treeLocal-First
0 likes · 5 min read
Why WeChat Stores Billions of Messages in SQLite: The Mobile Database Trade-offs
Architect's Tech Stack
Architect's Tech Stack
Oct 6, 2026 · Artificial Intelligence

Spring AI Alibaba's Kernel Shift to AgentScope: Java's AI Future Is Deterministic Runtime

The article reveals Spring AI Alibaba's apparent stagnation masks a planned kernel migration to AgentScope, contrasting graph-based workflow orchestration with agentic runtime loops, and argues Java's AI strength lies in deterministic execution capabilities like transactions and state machines rather than framework chasing.

AgentScopeJava AI frameworksSpring AI 2.0
0 likes · 10 min read
Spring AI Alibaba's Kernel Shift to AgentScope: Java's AI Future Is Deterministic Runtime