iluwatar/java-design-patterns

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Design patterns implemented in Java

Stars: 94.7k
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
Code of conduct: No code of conduct
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115 issues indexed so far

Migrate GitHub Actions workflows off deprecated Node 20 runtimes Open

Difficulty 4/5 3-5 days Newbie friendliness 38/100

iluwatar/java-design-patterns#3607 · Opened Sep 12, 2026
[Feature Request]: Add Scatter-Gather Design Pattern Open

epic: pattern type: feature

iluwatar/java-design-patterns#3577 · 5 comments · 1 assignee · Opened Aug 17, 2026
Translation to Russian Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#3434 · 2 comments · 2 assignees · Opened Feb 15, 2026
Implement Actor Model pattern Open

epic: pattern Stale type: feature

iluwatar/java-design-patterns#3232 · 6 comments · 1 assignee · Opened Mar 30, 2025
Fix busy-waiting loops Open

epic: code quality epic: pattern info: help wanted

Difficulty 4/5 3-5 days Newbie friendliness 45/100

iluwatar/java-design-patterns#2977 · 52 comments · 4 reactions · Opened Jun 1, 2024
Service-Oriented Architecture pattern Open

epic: pattern type: feature

iluwatar/java-design-patterns#2937 · 8 comments · 1 reaction · 1 assignee · Opened May 4, 2024
Timeout pattern Open

epic: pattern type: feature

iluwatar/java-design-patterns#2845 · 13 comments · 1 assignee · Opened Mar 24, 2024
Microservice pattern: Server-side page fragment composition Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2697 · 7 comments · Opened Oct 15, 2023
Microservice pattern: Log deployments and changes Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2696 · 5 comments · Opened Oct 15, 2023
Microservice pattern: Exception tracking Open

epic: pattern info: help wanted Stale type: feature

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

iluwatar/java-design-patterns#2694 · 7 comments · Opened Oct 15, 2023
Microservice pattern: Audit logging Open

epic: pattern type: feature

iluwatar/java-design-patterns#2692 · 5 comments · 1 assignee · Opened Oct 15, 2023
Microservice pattern: Application metrics Open

epic: pattern info: help wanted status: stale type: feature

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

iluwatar/java-design-patterns#2691 · 3 comments · Opened Oct 15, 2023
Microservice pattern: Access token Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2689 · 4 comments · Opened Oct 15, 2023
Microservice pattern: 3rd party registration Open

epic: pattern info: help wanted status: stale type: feature

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

iluwatar/java-design-patterns#2688 · 2 comments · Opened Oct 15, 2023
Microservice pattern: Server-side service discovery Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2686 · 11 comments · Opened Oct 15, 2023
Microservice pattern: Client-side service discovery Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2685 · 12 comments · Opened Oct 15, 2023
Microservice pattern: Domain-specific protocol Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2682 · 7 comments · Opened Oct 15, 2023
Microservice pattern: Remote procedure invocation Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2680 · 7 comments · Opened Oct 15, 2023
Microservice pattern: Externalized configuration Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2679 · 3 comments · Opened Oct 15, 2023
Microservice pattern: Service template Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2678 · 3 comments · Opened Oct 15, 2023
Microservice pattern: Microservice chassis Open

epic: pattern info: help wanted status: stale type: feature

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

iluwatar/java-design-patterns#2677 · 2 comments · Opened Oct 15, 2023
Microservice pattern: Consumer-driven contract test Open

epic: pattern info: help wanted status: stale type: feature

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

iluwatar/java-design-patterns#2675 · 2 comments · Opened Oct 15, 2023
Microservice pattern: Service component test Open

epic: pattern info: help wanted status: stale type: feature

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

iluwatar/java-design-patterns#2674 · 2 comments · Opened Oct 15, 2023
Microservice pattern: Transaction log tailing Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2672 · 3 comments · Opened Oct 15, 2023
Microservice pattern: Transactional outbox Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2671 · 1 comment · Opened Oct 15, 2023
Microservice pattern: Domain event Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2670 · 2 comments · Opened Oct 15, 2023
Microservice pattern: Command-side replica Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2668 · 2 comments · Opened Oct 15, 2023
Microservice pattern: Shared database Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2667 · 3 comments · Opened Oct 15, 2023
Microservice pattern: Database per service Open

epic: pattern info: help wanted status: stale type: feature

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

iluwatar/java-design-patterns#2666 · 4 comments · Opened Oct 15, 2023
Microservice architecture Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2665 · 3 comments · Opened Oct 15, 2023
Translate to Tamil Open

epic: translation info: help wanted type: feature

iluwatar/java-design-patterns#2637 · 4 comments · 1 assignee · Opened Oct 12, 2023
Translation to Urdu Open

epic: translation info: help wanted type: feature

iluwatar/java-design-patterns#2563 · 6 comments · 1 assignee · Opened Aug 15, 2023
Translation to Danish Open

epic: translation info: help wanted type: feature

iluwatar/java-design-patterns#2485 · 3 comments · 1 assignee · Opened Mar 1, 2023
Event-carried state transfer pattern Open

epic: pattern type: feature

iluwatar/java-design-patterns#2434 · 4 comments · 1 assignee · Opened Jan 6, 2023
Vertical slice architecture Open

epic: pattern info: help wanted type: feature

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

iluwatar/java-design-patterns#2373 · 13 comments · Opened Dec 2, 2022
Translation to Italian Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2314 · 8 comments · 3 assignees · Opened Nov 6, 2022
Translation to Chinese Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2289 · 11 comments · 6 assignees · Opened Oct 30, 2022
Translation to Vietnamese Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2288 · 3 comments · 1 assignee · Opened Oct 30, 2022
Translation to Turkish Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2287 · 3 comments · 2 assignees · Opened Oct 30, 2022
Translation to Portuguese Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2285 · 5 comments · 4 assignees · Opened Oct 30, 2022
Translation to Marathi Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2284 · 8 comments · 3 assignees · Opened Oct 30, 2022
Translate to Korean Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2282 · 8 comments · 1 reaction · 6 assignees · Opened Oct 30, 2022
Translate to Japanese Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2281 · 2 comments · 1 assignee · Opened Oct 30, 2022
Translate to Indonesian Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2280 · 2 comments · 1 assignee · Opened Oct 30, 2022
Translate to Hindi Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2279 · 8 comments · 1 assignee · Opened Oct 30, 2022
Translate to French Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2278 · 5 comments · 4 assignees · Opened Oct 30, 2022
Translate to Spanish Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2277 · 12 comments · 4 assignees · Opened Oct 30, 2022
Translate to Greek Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2276 · 4 comments · 1 assignee · Opened Oct 30, 2022
Translate to German Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2275 · 4 comments · 3 assignees · Opened Oct 30, 2022
Translate to Bengali (Bangla) Open

epic: documentation info: help wanted type: feature

iluwatar/java-design-patterns#2274 · 5 comments · 2 assignees · Opened Oct 30, 2022

iluwatar/java-design-patterns

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