{"id":15043423,"url":"https://github.com/oli-d/nova","last_synced_at":"2025-08-11T00:17:54.550Z","repository":{"id":2332269,"uuid":"3293934","full_name":"oli-d/nova","owner":"oli-d","description":"Java libraries for rapid (micro) service development","archived":false,"fork":false,"pushed_at":"2023-12-05T22:17:27.000Z","size":2235,"stargazers_count":7,"open_issues_count":4,"forks_count":3,"subscribers_count":3,"default_branch":"master","last_synced_at":"2024-09-29T23:05:04.479Z","etag":null,"topics":["asynchronous","event-driven","java","micro-framework","microservices","reactive-programming"],"latest_commit_sha":null,"homepage":"","language":"Java","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"other","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/oli-d.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":"LICENSE","code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null}},"created_at":"2012-01-28T22:50:22.000Z","updated_at":"2021-07-14T15:30:19.000Z","dependencies_parsed_at":"2022-09-11T15:12:09.058Z","dependency_job_id":null,"html_url":"https://github.com/oli-d/nova","commit_stats":null,"previous_names":[],"tags_count":6,"template":false,"template_full_name":null,"repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/oli-d%2Fnova","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/oli-d%2Fnova/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/oli-d%2Fnova/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/oli-d%2Fnova/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/oli-d","download_url":"https://codeload.github.com/oli-d/nova/tar.gz/refs/heads/master","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":219855406,"owners_count":16556095,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","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":["asynchronous","event-driven","java","micro-framework","microservices","reactive-programming"],"created_at":"2024-09-24T20:49:00.328Z","updated_at":"2024-10-12T15:40:51.079Z","avatar_url":"https://github.com/oli-d.png","language":"Java","funding_links":[],"categories":[],"sub_categories":[],"readme":"# Nova\n\n[![Maven Central](https://maven-badges.herokuapp.com/maven-central/ch.squaredesk.nova/bom/badge.svg?style=plastic)](https://maven-badges.herokuapp.com/maven-central/ch.squaredesk.nova/bom)\n[![Codeship Status for oli-d/nova](https://app.codeship.com/projects/2283d970-1edb-0135-0041-4ec1c01dd1d7/status?branch=master)](https://app.codeship.com/projects/220890)\n[![Codacy Badge](https://api.codacy.com/project/badge/Grade/46d98c14e90b472b8bc550deb0869c72)](https://www.codacy.com/app/oli-d/nova?utm_source=github.com\u0026amp;utm_medium=referral\u0026amp;utm_content=oli-d/nova\u0026amp;utm_campaign=Badge_Grade)\n\n[![Quality gate](https://sonarcloud.io/api/project_badges/quality_gate?project=oli-d_nova)](https://sonarcloud.io/dashboard?id=oli-d_nova)\n\n[![Security Rating](https://sonarcloud.io/api/project_badges/measure?project=oli-d_nova\u0026metric=security_rating)](https://sonarcloud.io/dashboard?id=oli-d_nova)\n[![Reliability Rating](https://sonarcloud.io/api/project_badges/measure?project=oli-d_nova\u0026metric=reliability_rating)](https://sonarcloud.io/dashboard?id=oli-d_nova)\n[![Maintainability Rating](https://sonarcloud.io/api/project_badges/measure?project=oli-d_nova\u0026metric=sqale_rating)](https://sonarcloud.io/dashboard?id=oli-d_nova)\n\n[![Lines of Code](https://sonarcloud.io/api/project_badges/measure?project=oli-d_nova\u0026metric=ncloc)](https://sonarcloud.io/dashboard?id=oli-d_nova)\n[![Vulnerabilities](https://sonarcloud.io/api/project_badges/measure?project=oli-d_nova\u0026metric=vulnerabilities)](https://sonarcloud.io/dashboard?id=oli-d_nova)\n[![SonarCloud Bugs](https://sonarcloud.io/api/project_badges/measure?project=oli-d_nova\u0026metric=bugs)](https://sonarcloud.io/component_measures/metric/reliability_rating/list?id=oli-d_nova)\n[![Code Smells](https://sonarcloud.io/api/project_badges/measure?project=oli-d_nova\u0026metric=code_smells)](https://sonarcloud.io/dashboard?id=oli-d_nova)\n[![Technical Debt](https://sonarcloud.io/api/project_badges/measure?project=oli-d_nova\u0026metric=sqale_index)](https://sonarcloud.io/dashboard?id=oli-d_nova)\n\n### 1. Why?\nThe goal of this project is to provide a small and easy-to-use \nlibrary that enables developers to rapidly build systems or \nservices in an \"event driven, asynchronous and reactive style\". \n\nThe origins of the API were heavily influenced by Node.js and \nits underlying programming model, hence the name (**No**de for\nJa**va**). This programming model, which (for those who have \nno experience with Node.js) is based on single-threaded event \nprocessing, prove itself to be very helpful in eliminating \nnasty concurrency bugs and to allow the programmer to fully \nconcentrate on the business logic.\n\nHowever, as everything in life, this also came with a downside.\nMainly, there were three things we had to fight with \n1. call back hell for business logic that depends on multiple\ndata sources,\n1. the need to split a long running execution into various parts\nand emit artificial \"sub events\", and \n1. improper event processing can easily block your one and only\n thread, rendering the whole service unresponsive.\n \nTherefore, we changed the philosophy (and implementation) of the \nlibrary and based it on RxJava (2.0) to promote a fully reactive\nway of programming.\n \n* Being reactive makes it very easy to express business logic based\non various information sources and define \"if this than that\" scenarios.\n* To the client, it is completely transparent whether information is\ndelivered synchronously or asynchronously \n* The client is under full control over the threading model. It can\n chose to go single threaded (if it has to mutate shared state) or\n multi threaded (for full system performance) at will. Going \n fully functional even eliminates that question  \n\n\n### 2. What's included?\n\nNova provides a couple of very small libraries. Those libraries try to focus on one (and only one) problem and try to\nsolve it in a consistent way, making it easy to combine them. They provide solutions for common, technical problems, \nallowing service developers to concentrate on the required business logic. \n\nCurrently, the following libraries exist:\n\n- Core functionality\n  * [core](./core/README.md): core functionality, used by all other components\n\n- Communication\n  * [comm](./comm/README.md): communication base library providing protocol agnostic, reactive message sending and retrieval\n  * [jms](./jms/README.md): reactive JMS messaging\n\n- spring-boot related\n  * [nova-starter](./nova-starter/README.md): Module to conveniently use Nova functionality with spring-boot  \n\n### 3. How do I integrate it in my projects?\n\nThe easiest way is to retrieve Nova from Maven central. We recommend you are using\n```maven```'s dependency management feature and import the ```BOM```, so that\nyou can be sure that all included modules properly work with each other:\n\n```xml\n\u003cdependencyManagement\u003e\n    \u003cdependencies\u003e\n        \u003cdependency\u003e\n            \u003cgroupId\u003ech.squaredesk.nova\u003c/groupId\u003e\n            \u003cartifactId\u003ebom\u003c/artifactId\u003e\n            \u003cversion\u003e10.0.0\u003c/version\u003e\n            \u003cscope\u003eimport\u003c/scope\u003e\n            \u003ctype\u003epom\u003c/type\u003e\n        \u003c/dependency\u003e\n    \u003c/dependencies\u003e\n\u003c/dependencymanagement\u003e\n```\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Foli-d%2Fnova","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Foli-d%2Fnova","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Foli-d%2Fnova/lists"}