WEB container
Tomcat
https://tomcat.apache.org/
Jetty
https://www.jetty.com/
JBoss
https://www.jboss.org/
Resin
https://caucho.com/products/resin
database
H2
https://h2database.com/
SQLite
https://www.sqlite.org/
MySQL
https://www.mysql.com/
Oracle
https://www.oracle.com/index.html
SQL Server
https://www.microsoft.com/en-us/sql-server/sql-server-downloads
PostgreSQL
https://www.postgresql.org/
MariaDB
https://mariadb.org/
cache
Redis
https://redis.io/
Memcached
https://memcached.org/
message queue
Kafka
https://kafka.apache.org/
RocketMQ
https://rocketmq.apache.org/
Pulsar
https://pulsar.apache.org/
RabbitMQ
https://www.rabbitmq.com/
load balancing
LVS
http://www.linuxvirtualserver.org/
NGINX
https://www.nginx.com/
Distributed storage
Ceph
https://docs.ceph.com/
HDFS
https://hadoop.apache.org/docs/r1.2.1/hdfs_design.html
Database cluster
MHA
https://github.com/yoshinorim/mha4mysql-manager
Distributed coordination
ZooKeeper
https://zookeeper.apache.org/
Big data related
Storm
https://storm.apache.org/
Considerable
https://flink.apache.org/
Spark
https://spark.apache.org/
HBase
https://hbase.apache.org/
Considerable
https://flink.apache.org/
ClickHouse
https://clickhouse.com/
Doris
https://doris.apache.org/
Log collection and analysis
Filebeat
https://www.elastic.co/beats/filebeat
Logstash
https://www.elastic.co/logstash/
Kibana
https://www.elastic.co/kibana
search
Elasticsearch
https://www.elastic.co/
System monitoring
SkyWalking
https://skywalking.apache.org/
zipkin
https://zipkin.io/
Sub-database and sub-table
ShardingSphere
https://shardingsphere.apache.org/
Mycat2
http://mycatone.top/
microservice
Spring Cloud
https://spring.io/projects/spring-cloud
RPC framework
Dubbo
https://github.com/apache/dubbo
gRPC
https://github.com/grpc/grpc-java
web framework
Netty
https://netty.io/
MVC framework
Spring Framework
https://spring.io/projects/spring-framework
Spring Boot
https://spring.io/projects/spring-boot
Data layer framework
MyBatis
https://github.com/mybatis/mybatis-3
MyBatis-Plus
https://github.com/baomidou/mybatis-plus
Hibernate
http://hibernate.org/orm/
database connection pool
HikariCP
https://github.com/brettwooldridge/HikariCP
Druid
https://github.com/alibaba/druid
Redis client
Jedis
https://github.com/xetorthio/jedis
Redisson
https://github.com/redisson/redisson
Rest interface design and development
Swagger
https://swagger.io/
Data parameter verification
Hibernate Validator
https://hibernate.org/validator/
security related
Shiro
https://shiro.apache.org/
Bouncy Castle
https://www.bouncycastle.org/java.html
jjwt
https://github.com/jwtk/jjwt
Reactive programming
As
https://akka.io/
RxJava
https://github.com/ReactiveX/RxJava
vert.x
https://vertx.io/
unit test
JUnit
https://junit.org/junit5/
Testing aid
JMockit
http://jmockit.github.io/
Mockito
https://github.com/mockito/mockito
JMeter
http://jmeter.apache.org/
Selenium
https://www.selenium.dev/
logging
Log4j2
https://logging.apache.org/log4j/
Logback
http://logback.qos.ch/
SLF4J
http://www.slf4j.org/
Code quality check
Checkstyle
https://github.com/checkstyle/checkstyle
Spotbugs
https://github.com/spotbugs/spotbugs
code generation
Lombok
https://projectlombok.org/
Domain language customization
ANTLR
https://www.antlr.org/
Configuration file analysis
config
https://github.com/lightbend/config
serialization format
Avro
https://avro.apache.org/
Thrift
https://thrift.apache.org/
Protobuf
https://github.com/protocolbuffers/protobuf
template engine
Freemarker
https://freemarker.apache.org/
Thymeleaf
https://www.thymeleaf.org/
Office document processing
THEN
https://poi.apache.org/
PDF processing
iText
https://itextpdf.com/en
Apache PDFBox
https://pdfbox.apache.org/
High performance queue
Disruptor
https://lmax-exchange.github.io/disruptor/
HTTP client
Async Http Client
https://github.com/AsyncHttpClient/async-http-client
Feign
https://github.com/OpenFeign/feign
Retrofit
https://square.github.io/retrofit/
QR code analysis
ZXing
https://github.com/zxing/zxing
Scheduled tasks
Quartz
https://github.com/quartz-scheduler/quartz
JSON parsing
Gson
https://github.com/google/gson
Jackson
https://github.com/FasterXML/jackson
fastjson
https://github.com/alibaba/fastjson
Distributed transactions
Set
https://github.com/seata/seata
attribute mapping
MapStruct
https://github.com/mapstruct/mapstruct
local cache
Ehcache
http://www.ehcache.org/
Caffeine
https://github.com/ben-manes/caffeine
System troubleshooting and tuning
JMH
http://openjdk.java.net/projects/code-tools/jmh/
Arthas
https://github.com/alibaba/arthas
Command line parameter parsing
JCommander
http://jcommander.org/
computer vision
JavaCV
https://github.com/bytedeco/javacv
tool collection
Guava
https://github.com/google/guava
Hutool
https://hutool.cn/
build tool
Maven
https://maven.apache.org/
Gradle
https://gradle.org/
Basel
https://bazel.build/
Local system development
JNA
https://github.com/java-native-access/jna
JVM
Adopt Open JDK
https://adoptopenjdk.net/
Grail
https://github.com/oracle/graal
Open JDK
https://openjdk.java.net/、
Multi-version Java support
Jenv
https://github.com/jenv/jenv
Reptile related
Nutch
https://nutch.apache.org/
Crawler4j
https://github.com/yasserg/crawler4j
are p
https://jsoup.org/
webmagic
https://github.com/code4craft/webmagic