What’s New in Mica 2.4.x? A Deep Dive into the Latest Backend Framework Updates

1. Mica (Cloud Stone)

mica

originated from the internal lutool project of RuoMeng Technology. lutool was created in 2017, inspired by jhipster, and gradually formed a core set of micro‑service tools. Because the name lutool did not reflect its function, it was renamed to mica (meaning “cloud stone”) in 2019 to signify a cornerstone of cloud services.

2. Version Overview

Note: The mica‑v2.0 branch only receives bug fixes and no new features.

Latest releases:

2.4.3‑GA (mica 2.4.x, Spring Boot 2.4.x, Spring Cloud 2020)

2.1.1‑GA (mica 2.0.x~2.1.x, Spring Boot 2.2.x~2.3.x, Spring Cloud Hoxton)

3. Cumulative Updates for 2.4.x

v2.4.3‑GA – 2021‑02‑27

Open‑source mica‑logging component.

Enhance mica‑core with JsonUtil and SystemUtil.

Add request start‑time key in mica‑core. mica‑xss now supports two modes: escape and clean. mica‑swagger API key authentication token name changed to Authorization.

Add star‑map diagram.

Replace module diagram.

Upgrade Spring Boot to 2.4.3.

v2.4.2‑GA – 2021‑02‑08

mica‑caffeine

and mica‑redis enable @EnableCaching by default.

Add mica‑caffeine module to mica‑bom.

v2.4.1‑GA – 2021‑01‑29

Critical : Fix mica‑xss ThreadLocal removal issue.

Improve mica‑xss with global trim, newline, and escape configurations.

v2.4.0‑GA – 2021‑01‑18

Expose XssUtil whitelist for custom rules.

Add ACTIVE_PROFILES_PROPERTY constant to mica‑core.

Move SpringContextUtil into mica‑core.

Upgrade to Spring Boot 2.4.2 and Spring Cloud 2020.0.0.

Upgrade mica‑auto to 2.0.3 and mica‑weixin to 2.0.5.

4. Updates for 2.1.x

v2.1.1‑GA – 2021‑02‑22

Critical : Fix mica‑xss ThreadLocal removal issue.

Upgrade mica‑weixin to 2.0.5.

Important: Users of mica‑xss should upgrade to version 2.1.1‑GA or 2.4.3‑GA.

5. New Modules

3.1 mica‑logging

By default, logs are printed to console, all.log, and error.log.

When set to json format, console logs remain plain text, while all.log is JSON‑formatted for filebeat collection.

Enable logstash to print only console logs and forward them to logstash.

Optionally disable console logs after startup.

3.2 mica‑caffeine

Enhanced Spring Caffeine cache supporting “#” separator for cache name and timeout, and time units ms, s (default), m, h, d.

Facilitates usage in components like mica‑weixin and mica‑captcha.

6. Mica Ecosystem

mica‑auto

: Spring Boot starter – https://gitee.com/596392912/mica-auto mica‑weixin: JFinal Weixin Spring Boot starter – https://gitee.com/596392912/mica-weixin mica‑mqtt: MQTT component based on t‑io – https://gitee.com/596392912/mica-mqtt

Spring Cloud microservice HTTP/2 solution (h2c) – https://gitee.com/596392912/spring-cloud-java11

7. Documentation and Resources

Source code on Gitee: https://gitee.com/596392912/mica

Source code on GitHub: https://github.com/lets-mica

Official documentation site: http://wiki.dreamlu.net

Documentation on Yuque (follow for updates): https://www.yuque.com/dreamlu

Example project: https://github.com/lets-mica/mica-example