{"id":18841502,"url":"https://github.com/subvisual/workshop-ddd-es-cqrs","last_synced_at":"2026-01-28T09:37:00.450Z","repository":{"id":149235268,"uuid":"430674419","full_name":"subvisual/workshop-ddd-es-cqrs","owner":"subvisual","description":"Workshop: building an application with Elixir and DDD/ES/CQRS","archived":false,"fork":false,"pushed_at":"2021-11-25T15:50:19.000Z","size":69,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":4,"default_branch":"main","last_synced_at":"2025-06-08T16:03:42.515Z","etag":null,"topics":[],"latest_commit_sha":null,"homepage":null,"language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/subvisual.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2021-11-22T11:11:49.000Z","updated_at":"2021-11-22T11:57:20.000Z","dependencies_parsed_at":null,"dependency_job_id":"a1aa6259-8001-4144-b2c5-f4436f0ba46e","html_url":"https://github.com/subvisual/workshop-ddd-es-cqrs","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/subvisual/workshop-ddd-es-cqrs","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/subvisual%2Fworkshop-ddd-es-cqrs","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/subvisual%2Fworkshop-ddd-es-cqrs/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/subvisual%2Fworkshop-ddd-es-cqrs/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/subvisual%2Fworkshop-ddd-es-cqrs/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/subvisual","download_url":"https://codeload.github.com/subvisual/workshop-ddd-es-cqrs/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/subvisual%2Fworkshop-ddd-es-cqrs/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":28843950,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-01-28T07:39:25.367Z","status":"ssl_error","status_checked_at":"2026-01-28T07:39:24.487Z","response_time":57,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.5:443 state=error: unexpected eof while reading","robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":false,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":[],"created_at":"2024-11-08T02:51:34.858Z","updated_at":"2026-01-28T09:37:00.431Z","avatar_url":"https://github.com/subvisual.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"# ES/CQRS Workshop\n\n## Intro\n\nHello, my name is [Ronaldo](http://github.com/ronaldofs) and I'm a software designer and developer, proud dad and guitarist wannabe.\nI work @ [Subvisual](https://subvisual.com) where we focus on helping ventures jumpstart or scale their business, be it strategy or hands-on, currently collaborating on several projects in web3/blockchain space.\n\n## Overview\n\nIn this workshop, we'll build a backend application in Elixir where the main goal is to showcase and discuss Event Sourcing and CQRS in the context of \"real-world\" business problems.\n\nWe'll cover strategy, planning and specification for a selected and scoped business domain and analyse implementation patterns and trade-offs for each component of the final solution.\n\n**Topics covered:**\n\n- Domain-driven Design\n  - Domain/subdomain\n  - Ubiquitous language\n  - Bounded context\n  - Continuous collaboration\n  - Tactical patterns\n- Event Sourcing and CQRS\n  - CRUD\n  - Events and Streams\n  - Event Store\n  - Projection\n  - Process manager / Saga\n- Collaborative modeling\n  - Event Storming\n  - Event Modeling\n  - Context Mapping\n  - User Story Mapping\n  - Value Stream Mapping\n- Process\n  - Delivery vs Discovery\n\n## Resources\n\n**Projects:**\n\n- [commanded](https://github.com/commanded) (es/cqrs tooling in elixir)\n- [eventstore](https://github.com/commanded/eventstore) (eventstore in elixir for postgres)\n- [eventstoredb](https://eventstore.com) (db built for event sourcing)\n- [message-db](https://github.com/message-db/message-db) (event/message store for postgres)\n- [jet/equinox](https://github.com/jet/equinox) (.NET)\n- [pyeventsourcing](https://github.com/pyeventsourcing/eventsourcing) (Python)\n\n**Links:**\n\n- [Slack community: ddd-cqrs-es](https://ddd-cqrs-es.slack.com/)\n- [Virtual DDD](https://virtualddd.com)\n- [Event Modeling](https://eventmodeling.org)\n- [DDD Crew](https://github.com/ddd-crew)\n- [EventSourcing.live](https://eventsourcing.live)\n- [DDD Europe](https://dddeurope.com)\n\n**Articles:**\n\n- [Life beyond Distributed Transactions](https://www.ics.uci.edu/~cs223/papers/cidr07p15.pdf)\n- [Immutability Changes Everything](https://queue.acm.org/detail.cfm?id=2884038)\n- [Data on the Outside vs. Data on the Inside](https://queue.acm.org/detail.cfm?id=3415014)\n\n**Books:**\n\n- Domain-driven Design Distilled (Addison-Wesley)\n- Domain Modeling made Functional (Pragmatic Programmers)\n- [Event Storming](https://www.eventstorming.com/book)\n- Secure By Design (Manning)\n- Accelerate (IT Revolution)\n- Team Topologies (IT Revolution)\n- [DDD: The first 15 years](https://dddeurope.com/15years)\n- [Versioning in an Event Sourced System](https://leanpub.com/esversioning)\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsubvisual%2Fworkshop-ddd-es-cqrs","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fsubvisual%2Fworkshop-ddd-es-cqrs","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fsubvisual%2Fworkshop-ddd-es-cqrs/lists"}