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Coder Trainee

Experienced in Java and Python, we share and learn together. For submissions or collaborations, DM us.

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Recent Articles

Latest from Coder Trainee

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Coder Trainee
Coder Trainee
May 21, 2026 · Cloud Native

Building Full Observability for Spring Cloud Microservices with Micrometer, Prometheus, and Grafana

After solving distributed transactions with Seata, this tutorial shows how to add complete observability to Spring Cloud microservices by integrating Micrometer, Prometheus, and Grafana, covering metrics pillars, configuration, custom business metrics, dashboard setup, alert rules, validation steps, and common pitfalls.

Docker ComposeGrafanaMetrics
0 likes · 12 min read
Building Full Observability for Spring Cloud Microservices with Micrometer, Prometheus, and Grafana
Coder Trainee
Coder Trainee
May 20, 2026 · Backend Development

Mastering Distributed Transactions in Spring Cloud with Seata (Part 8)

This tutorial walks through why distributed transactions are needed in a Spring Cloud order‑stock‑point scenario, compares local and distributed transaction models, introduces Seata’s architecture and three transaction modes, shows environment setup, code implementation, testing steps, and common pitfalls with solutions.

AT ModeJavaSeata
0 likes · 11 min read
Mastering Distributed Transactions in Spring Cloud with Seata (Part 8)
Coder Trainee
Coder Trainee
May 19, 2026 · Cloud Native

Spring Cloud Microservices in Practice – Revised Part 7: Using SkyWalking for Distributed Tracing

After solving service fault tolerance with Sentinel, this guide shows how to add SkyWalking to a Spring Cloud microservice stack, configure the OAP, UI and Java agents, verify trace data, and troubleshoot common issues, enabling precise latency analysis and error localization across services.

Distributed TracingDocker ComposeObservability
0 likes · 12 min read
Spring Cloud Microservices in Practice – Revised Part 7: Using SkyWalking for Distributed Tracing
Coder Trainee
Coder Trainee
May 18, 2026 · Cloud Native

Spring Cloud Microservices Tutorial – Sentinel for Fault Tolerance and Rate Limiting

This article walks through adding Alibaba Sentinel to a Spring Cloud microservice suite to protect against service outages, traffic spikes, and slow calls by configuring rate limiting, circuit breaking, and fallback mechanisms across user, order, and gateway services, with full Docker‑compose setup and testing steps.

Circuit BreakerFeignGateway
0 likes · 14 min read
Spring Cloud Microservices Tutorial – Sentinel for Fault Tolerance and Rate Limiting
Coder Trainee
Coder Trainee
May 16, 2026 · Cloud Native

Spring Cloud Gateway: Unified Entry Point for Microservice Calls

This tutorial walks through adding Spring Cloud Gateway as a single entry point for client calls to multiple microservices, covering why a gateway is needed, project structure, dependency and configuration setup, global logging and authentication filters, startup verification, and common pitfalls with solutions.

Global FilterLoad BalancerNacos
0 likes · 13 min read
Spring Cloud Gateway: Unified Entry Point for Microservice Calls
Coder Trainee
Coder Trainee
May 15, 2026 · Cloud Native

Simplify Service Calls in Spring Cloud Microservices with OpenFeign (Revised Edition)

This article shows how to replace verbose WebClient/Nacos calls with declarative OpenFeign in a Spring Cloud microservice setup, reducing code by about 80%, improving readability, adding automatic load balancing, retries, logging, and circuit‑breaker support, and provides step‑by‑step configuration, code examples, and common pitfalls.

Circuit BreakerFeign ClientOpenFeign
0 likes · 12 min read
Simplify Service Calls in Spring Cloud Microservices with OpenFeign (Revised Edition)
Coder Trainee
Coder Trainee
May 13, 2026 · Cloud Native

Spring Cloud Microservices Revised Edition – Intro and New Tech Stack

After finishing the Spring Boot source‑code series, the author launches a refreshed Spring Cloud microservices tutorial built on Spring Boot 3.x, Jakarta EE, GraalVM native images, full production‑grade demos, Kubernetes deployment, observability and performance testing, outlining a 12‑episode roadmap.

GraalVMJava 17Kubernetes
0 likes · 7 min read
Spring Cloud Microservices Revised Edition – Intro and New Tech Stack
Coder Trainee
Coder Trainee
May 12, 2026 · Backend Development

Designing a Logistics Prepaid Deduction System: Architecture & Core Implementation

This article details a logistics‑focused prepaid deduction platform built with a Spring Boot backend and Vue 3 frontend, covering precise cent‑to‑yuan handling, role‑based view isolation, VO‑based pagination, automatic deduction workflow, and an Apple‑style responsive UI using Tailwind CSS.

Money PrecisionMySQLRole-Based Access
0 likes · 6 min read
Designing a Logistics Prepaid Deduction System: Architecture & Core Implementation