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Ubiquitous Tech

A ubiquitous public account for pirate enthusiasts, regularly sharing curated experiences, tech learning, and growth insights. Currently publishing articles on AI RAG customer service, AI MCP technology, and open-source design. Personal free Knowledge Planet: Awakening New World Programmer.

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Latest from Ubiquitous Tech

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Ubiquitous Tech

Aug 31, 2025 · Backend Development

Java Interview Simulation: Designing a Scalable E‑Commerce Transaction & Fulfillment Platform

The article walks through a detailed Java interview simulation where the candidate designs a high‑performance, microservice‑based e‑commerce transaction and fulfillment system, covering architecture decomposition, caching, concurrency control, distributed transactions, observability, AI‑driven recommendation, and a concrete career roadmap.

AICI/CDCaching

0 likes · 50 min read

Java Interview Simulation: Designing a Scalable E‑Commerce Transaction & Fulfillment Platform

Ubiquitous Tech

Aug 30, 2025 · Cloud Native

How Higress AI Gateway Turns Business APIs into an MCP Server

The article explains how to replace manual MCP Server development with Higress AI Gateway's API‑to‑MCP feature, showing step‑by‑step Docker setup, configuration of a simple SpringBoot service, MCP tool definition, request‑template options, and the resulting zero‑code deployment for AI agents.

AI GatewayAPI-to-MCPDocker

0 likes · 13 min read

How Higress AI Gateway Turns Business APIs into an MCP Server

Ubiquitous Tech

Aug 26, 2025 · Backend Development

Java Interview Simulation: Solving Sohu’s High‑Throughput Push System

This article walks through a five‑round Java interview simulation where the candidate designs, optimizes, and secures a massive push‑notification system for Sohu, covering Spring Boot high‑concurrency architecture, sharding and cache‑penetration mitigation, Kafka reliability, Kubernetes deployment with gray releases, multi‑region high‑availability, and AI‑driven smart‑push strategies, complete with concrete code snippets and real‑world performance numbers.

KafkaKubernetesRedis

0 likes · 37 min read

Java Interview Simulation: Solving Sohu’s High‑Throughput Push System

Ubiquitous Tech

Aug 24, 2025 · Backend Development

Java Interview Deep Dive: Solving Real‑World Invoice System Challenges

The article walks through a simulated five‑round Java interview where the candidate designs a high‑concurrency invoice‑issuing service, covering gateway architecture, async Kafka processing, cache strategies, JVM thread‑pool and memory tuning, database‑cache coordination, microservice messaging, system design, performance optimization and AI integration, all illustrated with concrete numbers and code snippets.

JVMJavaKafka

0 likes · 35 min read

Java Interview Deep Dive: Solving Real‑World Invoice System Challenges

Ubiquitous Tech

Aug 21, 2025 · Backend Development

Build a Streamable HTTP MCP Server with Spring AI 1.1

This article walks through creating a Java Spring Boot MCP Server that supports Streamable HTTP using the newly released Spring AI 1.1 snapshot, covering repository setup, Maven dependencies, configuration, service implementation, and verification with example code and screenshots.

BackendMCPMCP Server

0 likes · 14 min read

Build a Streamable HTTP MCP Server with Spring AI 1.1

Ubiquitous Tech

Aug 17, 2025 · Backend Development

MCP Lesson 12: Implementing a Trend‑Aggregating MCP Server for Weibo, Douyin, Toutiao, and Juejin

This article walks through the open‑source mcp‑trends‑hub project, explains its one‑stop hot‑trend aggregation features, shows how to configure the MCP Server in a client, and provides step‑by‑step Java implementations for Weibo, Douyin, Toutiao, NetEase News and Juejin trend tools, including code, architecture diagrams and registration flow.

DouyinJavaJuejin

0 likes · 23 min read

MCP Lesson 12: Implementing a Trend‑Aggregating MCP Server for Weibo, Douyin, Toutiao, and Juejin

Ubiquitous Tech

Aug 13, 2025 · Backend Development

Designing a Generic TypeScript MCP Server Framework – Lesson 11

This article walks through building a reusable TypeScript MCP Server framework using strategy and factory patterns, showing project setup, core type definitions, a sample DeployHtml tool, a singleton registry, Express‑SSE integration, automatic tool loading, and a side‑by‑side comparison with a Java implementation.

BackendExpressFactory Pattern

0 likes · 17 min read

Designing a Generic TypeScript MCP Server Framework – Lesson 11

Ubiquitous Tech

Aug 9, 2025 · Backend Development

Build a Streamable HTTP MCP Server with Java’s New 0.11 SDK (Lesson 10)

The article explains how the Java MCP SDK 0.11 adds Streamable HTTP support, compares it with the traditional HTTP+SSE approach, and walks through adding Maven dependencies, configuring Spring AI, creating custom auto‑configuration classes, implementing a Weibo trending tool, and deploying a fully functional Streamable HTTP MCP server.

Auto-configurationJavaSDK 0.11

0 likes · 19 min read

Build a Streamable HTTP MCP Server with Java’s New 0.11 SDK (Lesson 10)

Ubiquitous Tech

Aug 7, 2025 · Artificial Intelligence

How to Use RAG Tool Calls in FastGPT for Real-Time Train Ticket Queries

This article walks through integrating RAG‑based tool calling into a FastGPT workflow to enable AI‑driven customer service that can fetch real‑time train ticket information by invoking external APIs, configuring HTTP nodes, and handling parameters step by step.

AI Customer ServiceFastGPTHTTP API

0 likes · 18 min read

How to Use RAG Tool Calls in FastGPT for Real-Time Train Ticket Queries

Ubiquitous Tech

Aug 5, 2025 · Information Security

How SmartAdmin Implements Level‑3 Security Protection

This article explains how the open‑source SmartAdmin project satisfies China’s Level‑3 security protection requirements by detailing identity verification, access control, audit, intrusion prevention, data integrity, confidentiality, backup, and masking, and shows the corresponding UI settings and backend code implementations.

JavaLevel‑3 ProtectionSecurity Design

0 likes · 19 min read

How SmartAdmin Implements Level‑3 Security Protection