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