iluwatar/java-design-patterns

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Design patterns implemented in Java

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Forks: 27.4k
Open beginner issues: 0
Indexed issues: 115
Avg merge: 3d 4h
Merged PRs (30d): 10

Dominant language: Java
License: No license data
Last GitHub push: Sep 13, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
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115 open issues indexed

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epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2273 · 12 comments · 10 assignees · Opened Oct 30, 2022
Domain-Oriented Microservice Architecture (DOMA) Open

epic: architecture epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 15/100

iluwatar/java-design-patterns#1336 · 7 comments · Opened Jul 25, 2020
Two Step View pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1323 · 13 comments · Opened Jul 7, 2020
Transform View pattern Open

epic: pattern info: help wanted type: feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

iluwatar/java-design-patterns#1322 · 13 comments · Opened Jul 7, 2020
Table Data Gateway pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 15/100

iluwatar/java-design-patterns#1318 · 7 comments · Opened Jul 7, 2020
Server Session State pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1315 · 2 comments · Opened Jul 7, 2020
Row Data Gateway pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1312 · 9 comments · Opened Jul 7, 2020
Remote Facade pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1311 · 12 comments · Opened Jul 7, 2020
Record Set pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1309 · 7 comments · Opened Jul 7, 2020
Query Object pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1308 · 7 comments · Opened Jul 7, 2020
Pessimistic Offline Lock pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 38/100

iluwatar/java-design-patterns#1307 · 11 comments · Opened Jul 7, 2020
Layer Supertype pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1302 · 6 comments · Opened Jul 7, 2020
Implicit Lock pattern Open

epic: pattern info: help wanted Stale type: feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

iluwatar/java-design-patterns#1300 · 14 comments · Opened Jul 7, 2020
Identity Field pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1298 · 16 comments · Opened Jul 7, 2020
Foreign Key Mapping pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 20/100

iluwatar/java-design-patterns#1296 · 9 comments · Opened Jul 7, 2020
Dependent Mapping pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 20/100

iluwatar/java-design-patterns#1293 · 11 comments · Opened Jul 7, 2020
Database Session State pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1292 · 2 comments · Opened Jul 7, 2020
Coarse-Grained Lock pattern Open

epic: pattern info: help wanted type: feature

Difficulty 4/5 3-5 days Newbie friendliness 30/100

iluwatar/java-design-patterns#1289 · 4 comments · Opened Jul 7, 2020
Lock Manager pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1283 · 6 comments · Opened Jul 7, 2020
Transactional Context pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1279 · 3 comments · Opened Jul 7, 2020
Service Adapter pattern Open

epic: pattern info: help wanted Stale type: feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

iluwatar/java-design-patterns#1277 · 8 comments · Opened Jul 7, 2020
Tuple Table pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1276 · 4 comments · Opened Jul 7, 2020
Stored Procedures for Primary Keys pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1273 · 3 comments · Opened Jul 7, 2020
PK Block Generator pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 20/100

iluwatar/java-design-patterns#1272 · 1 comment · Opened Jul 7, 2020
Procedure Access Object pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1271 · 1 comment · Opened Jul 7, 2020
Data Transfer Hash pattern Open

epic: pattern info: help wanted type: feature

Difficulty 4/5 3-5 days Newbie friendliness 25/100

iluwatar/java-design-patterns#1269 · 8 comments · Opened Jul 7, 2020
Caching Filter pattern Open

epic: pattern info: help wanted type: feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

iluwatar/java-design-patterns#1266 · 3 comments · Opened Jul 7, 2020
Asynchronous Page pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

iluwatar/java-design-patterns#1265 · 4 comments · Opened Jul 7, 2020
Functional core, imperative shell pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 18/100

iluwatar/java-design-patterns#1258 · 3 comments · Opened Jul 4, 2020
Service Mesh pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 20/100

iluwatar/java-design-patterns#1246 · 5 comments · Opened May 27, 2020
Space-based architecture Open

epic: architecture epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1087 · 1 comment · Opened Nov 13, 2019
Microkernel architecture Open

epic: architecture epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#1086 · 6 comments · Opened Nov 13, 2019
Store and Process pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#917 · 16 comments · Opened Aug 15, 2019
Kappa Architecture Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#892 · 15 comments · 1 reaction · Opened Jul 1, 2019
Robot pattern Open

epic: pattern info: help wanted type: feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

iluwatar/java-design-patterns#606 · 6 comments · Opened Aug 7, 2017
State-Action-Model pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#511 · 13 comments · Opened Oct 23, 2016
Component Object pattern Open

epic: pattern info: help wanted type: feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

iluwatar/java-design-patterns#509 · 11 comments · Opened Oct 23, 2016
Entity component system (ECS) pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

iluwatar/java-design-patterns#485 · 10 comments · 1 reaction · Opened Aug 11, 2016
Asynchronous Retry pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#460 · 10 comments · Opened Jul 13, 2016
Dependency Command pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#439 · 5 comments · Opened Jul 2, 2016
IODA architectural pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#429 · 1 comment · Opened May 11, 2016
Collector State Pattern Open

epic: pattern info: help wanted type: feature

Difficulty 3/5 1-2 days Newbie friendliness 35/100

iluwatar/java-design-patterns#394 · 16 comments · Opened Mar 2, 2016
Service Registry pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#383 · 12 comments · Opened Feb 16, 2016
Composition root pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#379 · 2 comments · Opened Feb 12, 2016
Plugin pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#351 · 22 comments · Opened Jan 16, 2016
Association Table Mapping pattern Open

epic: pattern info: help wanted type: feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

iluwatar/java-design-patterns#347 · 7 comments · Opened Jan 16, 2016
Application Controller pattern Open

epic: pattern info: help wanted type: feature

Difficulty 4/5 3-5 days Newbie friendliness 35/100

iluwatar/java-design-patterns#346 · 10 comments · Opened Jan 16, 2016
Extract-Transform-Load (ETL) architectural pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 30/100

iluwatar/java-design-patterns#328 · 10 comments · Opened Dec 27, 2015
Staged Event Driven Architecture (SEDA) Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 35/100

iluwatar/java-design-patterns#307 · 3 comments · Opened Nov 30, 2015
Presentation-Abstraction-Control pattern Open

epic: pattern info: help wanted type: feature

Difficulty 5/5 Over a week Newbie friendliness 25/100

iluwatar/java-design-patterns#304 · 8 comments · Opened Nov 25, 2015

iluwatar/java-design-patterns

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