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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

100 recent articles max
Ray's Galactic Tech
Ray's Galactic Tech
Jan 4, 2026 · Fundamentals

Master Elasticsearch: From Core Concepts to Advanced Search and Scaling

This guide introduces Elasticsearch’s fundamental architecture, explains core concepts such as inverted indexes, analyzers, and mapping, demonstrates essential query types, aggregation techniques, performance optimizations, distributed design, and real‑world use cases like blog and e‑commerce search, while also covering monitoring and advanced features.

ElasticsearchQuery DSLaggregation
0 likes · 9 min read
Master Elasticsearch: From Core Concepts to Advanced Search and Scaling
Ray's Galactic Tech
Ray's Galactic Tech
Jan 2, 2026 · Databases

Is Containerized MySQL Ready for Production? A Deep Comparison with Traditional Deployments

This article provides a comprehensive, production‑grade comparison between containerized MySQL on Kubernetes and traditional on‑premises deployments, clarifying core concepts, evaluating elasticity, availability, performance, and operational overhead, and offering concrete best‑practice recommendations, risk considerations, and future trends.

Database OpsMySQLbest practices
0 likes · 8 min read
Is Containerized MySQL Ready for Production? A Deep Comparison with Traditional Deployments
Ray's Galactic Tech
Ray's Galactic Tech
Jan 2, 2026 · Fundamentals

8 Powerful Asynchronous Patterns Every Developer Should Master

Async programming boosts efficiency by allowing tasks to run while waiting for I/O, and this guide explores eight common implementations—callbacks, Promises, async/await, event emitters, generators, coroutines, ReactiveX, and the Actor model—detailing their advantages, drawbacks, suitable scenarios, and production‑grade best practices.

Asyncactor-modelawait
0 likes · 10 min read
8 Powerful Asynchronous Patterns Every Developer Should Master
Ray's Galactic Tech
Ray's Galactic Tech
Jan 2, 2026 · Backend Development

12 Proven Backend Optimization Techniques to Boost API Performance

Explore a comprehensive set of backend performance strategies—including asynchronous processing, multi-level caching, batch operations, and space‑time tradeoffs—detailing typical scenarios, implementation methods, and measurable effects to dramatically improve API response speed, throughput, and system stability.

AsynchronousOptimizationPerformance
0 likes · 8 min read
12 Proven Backend Optimization Techniques to Boost API Performance
Ray's Galactic Tech
Ray's Galactic Tech
Jan 2, 2026 · Databases

How to Choose the Right PostgreSQL Isolation Level and Avoid Concurrency Bugs

PostgreSQL offers four transaction isolation levels—READ UNCOMMITTED, READ COMMITTED, REPEATABLE READ, and SERIALIZABLE—each preventing specific concurrency anomalies like dirty reads, non‑repeatable reads, and phantom reads, and the article explains their behavior, configuration commands, practical usage, performance trade‑offs, and production best practices.

PostgreSQLSQLconcurrency
0 likes · 9 min read
How to Choose the Right PostgreSQL Isolation Level and Avoid Concurrency Bugs
Ray's Galactic Tech
Ray's Galactic Tech
Dec 30, 2025 · Databases

Why MySQL Indexes Fail and 14 Proven Fixes for Faster Queries

This article explains how MySQL indexes work, enumerates eight common reasons they become ineffective, adds six advanced pitfalls, and provides concrete diagnostic steps and production‑grade optimization techniques to keep queries fast and reliable.

Database TuningIndex OptimizationMySQL
0 likes · 9 min read
Why MySQL Indexes Fail and 14 Proven Fixes for Faster Queries
Ray's Galactic Tech
Ray's Galactic Tech
Dec 30, 2025 · Databases

When to Combine PostgreSQL and MongoDB: A Practical Guide for Enterprise Architecture

This article explains why modern enterprises should avoid single‑database solutions, compares PostgreSQL and MongoDB across core philosophy, technical capabilities, ecosystem extensions, and cost, and provides a decision framework, real‑world case studies, and a hybrid architecture blueprint for scalable, low‑risk systems.

MongoDBPostgreSQLhybrid architecture
0 likes · 9 min read
When to Combine PostgreSQL and MongoDB: A Practical Guide for Enterprise Architecture