Ray's Galactic Tech
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Ray's Galactic Tech

Practice together, never alone. We cover programming languages, development tools, learning methods, and pitfall notes. We simplify complex topics, guiding you from beginner to advanced. Weekly practical content—let's grow together!

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Recent Articles

Latest from Ray's Galactic Tech

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Ray's Galactic Tech
Ray's Galactic Tech
Jul 27, 2026 · Databases

How Partitioning Cut a 43‑Second PostgreSQL Query to 0.3 seconds

In a SaaS analytics platform with a 45‑billion‑row, 1.2 TB events table, the author shows how moving to native PostgreSQL range partitioning by event_time, combined with zero‑downtime migration steps, reduced the typical P99 query latency from 43 seconds to about 0.3 seconds while enabling easier data lifecycle management.

PostgreSQLmigrationpartitioning
0 likes · 27 min read
How Partitioning Cut a 43‑Second PostgreSQL Query to 0.3 seconds
Ray's Galactic Tech
Ray's Galactic Tech
Jul 27, 2026 · Artificial Intelligence

From Zero to One: Building an AI Requirement Analysis Engine – Full Technical Walkthrough of the Skills Architecture

This article details how to engineer a production‑grade AI requirement‑analysis engine using a modular Skills framework, covering problem definition, architecture, compilation pipeline, conflict detection, impact analysis, scalability, multi‑tenant governance, and deployment best practices.

AIEngineeringKnowledge Retrieval
0 likes · 34 min read
From Zero to One: Building an AI Requirement Analysis Engine – Full Technical Walkthrough of the Skills Architecture
Ray's Galactic Tech
Ray's Galactic Tech
Jul 26, 2026 · Artificial Intelligence

Add Reusable Templates to an AI Assistant with AgentScope 2.0.3

AgentScope 2.0.3 introduces a Skills layer that lets teams attach reusable, versioned work templates to AI assistants without writing code, separating business logic from runtime control, enabling fine‑grained governance, high‑concurrency isolation, task‑based execution, and robust observability for production‑grade deployments.

AI AgentsObservabilitySecurity
0 likes · 36 min read
Add Reusable Templates to an AI Assistant with AgentScope 2.0.3
Ray's Galactic Tech
Ray's Galactic Tech
Jul 23, 2026 · Backend Development

How to Keep Billions of Order States In Order with RocketMQ’s Ordered Messaging

The article explains why order‑status updates can become out‑of‑order in high‑traffic systems, how RocketMQ’s ordered‑message feature guarantees per‑key sequencing while highlighting its trade‑offs, and provides concrete producer and consumer implementations, failure handling, scaling, and deployment guidelines to ensure reliable, idempotent order processing.

Message QueueOrdered MessagingRocketMQ
0 likes · 27 min read
How to Keep Billions of Order States In Order with RocketMQ’s Ordered Messaging
Ray's Galactic Tech
Ray's Galactic Tech
Jul 23, 2026 · Artificial Intelligence

Stop Embedding Business Logic in Prompts: An Enterprise Guide to Spring AI Alibaba Skills

The article explains why many AI projects fail not because of model performance but due to architectural boundaries, illustrates a real‑world incident caused by an ever‑growing "super Prompt", and shows how Spring AI Alibaba Skills can split responsibilities, enforce governance, and make AI services production‑ready.

Alibaba SkillsObservabilitySpring AI
0 likes · 26 min read
Stop Embedding Business Logic in Prompts: An Enterprise Guide to Spring AI Alibaba Skills
Ray's Galactic Tech
Ray's Galactic Tech
Jul 22, 2026 · Backend Development

From Chaos to Control: A Complete Spring Boot Logging Guide with 8 Production Scenarios

The article analyzes why logging in modern Spring Boot microservices shifts from a simple debug tool to a critical data pipeline, compares Logback and Log4j2 async setups, reveals hidden costs and risks, and walks through eight concrete production scenarios to build a controllable, high‑performance logging architecture.

KubernetesLog4j2Logback
0 likes · 25 min read
From Chaos to Control: A Complete Spring Boot Logging Guide with 8 Production Scenarios
Ray's Galactic Tech
Ray's Galactic Tech
Jul 22, 2026 · Backend Development

Spring AI Alibaba Workflow Explained with 10 Practical AI Orchestration Cases

The article analyzes why AI applications that require branching, parallelism, retries, human‑in‑the‑loop, or long‑running tasks should adopt Spring AI Alibaba Workflow, explains its core concepts, shows when it fits or not, provides a detailed example and ten real‑world scenarios, and offers practical guidance on design, state management, error handling, persistence, and operational costs.

AI orchestrationGraphSpring AI
0 likes · 28 min read
Spring AI Alibaba Workflow Explained with 10 Practical AI Orchestration Cases
Ray's Galactic Tech
Ray's Galactic Tech
Jul 21, 2026 · Backend Development

AI Customer Service at Millions Scale: Chat API to Function Calling (SpringBoot)

The article details how a Spring Boot‑based intelligent customer service evolves from a simple chat endpoint to a robust Function Calling architecture, addressing challenges such as real‑time data access, permission checks, idempotency, error handling, token management, and scaling to tens of millions of daily conversations.

AI Customer ServiceBackend DevelopmentFunction Calling
0 likes · 27 min read
AI Customer Service at Millions Scale: Chat API to Function Calling (SpringBoot)
Ray's Galactic Tech
Ray's Galactic Tech
Jul 21, 2026 · Backend Development

14 Painful Spring Boot Cache Pitfalls and How to Build a High‑Availability Architecture

This article walks through 14 real‑world failure scenarios of Spring Boot distributed caching, explains why high cache hit rates are misleading, and provides concrete analysis, code samples, and step‑by‑step recommendations for designing a resilient cache layer that isolates faults, handles hot keys, and ensures data consistency across Redis, local caches, and databases.

Cache InvalidationDistributed CacheHigh Availability
0 likes · 37 min read
14 Painful Spring Boot Cache Pitfalls and How to Build a High‑Availability Architecture