{"id":22085888,"url":"https://github.com/whardier/ddl","last_synced_at":"2026-04-29T11:02:14.025Z","repository":{"id":138279189,"uuid":"98588806","full_name":"whardier/ddl","owner":"whardier","description":"Differential Document Ledger","archived":false,"fork":false,"pushed_at":"2017-07-28T00:17:24.000Z","size":4,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":2,"default_branch":"master","last_synced_at":"2025-03-23T22:17:01.105Z","etag":null,"topics":["blockchain","blockchain-network","cryptocurrency","json","protobuf","python","zeromq"],"latest_commit_sha":null,"homepage":null,"language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"mit","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/whardier.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,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2017-07-27T23:55:48.000Z","updated_at":"2017-07-28T00:05:18.000Z","dependencies_parsed_at":null,"dependency_job_id":"3464713c-113d-4355-9301-b5219e8d172b","html_url":"https://github.com/whardier/ddl","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/whardier/ddl","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/whardier%2Fddl","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/whardier%2Fddl/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/whardier%2Fddl/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/whardier%2Fddl/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/whardier","download_url":"https://codeload.github.com/whardier/ddl/tar.gz/refs/heads/master","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/whardier%2Fddl/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":32422532,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-04-29T06:29:02.080Z","status":"ssl_error","status_checked_at":"2026-04-29T06:29:00.631Z","response_time":110,"last_error":"SSL_connect returned=1 errno=0 peeraddr=140.82.121.6:443 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":["blockchain","blockchain-network","cryptocurrency","json","protobuf","python","zeromq"],"created_at":"2024-12-01T01:17:04.131Z","updated_at":"2026-04-29T11:02:14.010Z","avatar_url":"https://github.com/whardier.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"# Differential Document Ledger (DDL)\n\nConcensus oriented ledger system to quickly and efficiently distribute persistent and ephemeral data between backend data providers and frontend services.\n\nInitial work will be done to provide a nonce based per-account distributed ledger similar to the tangle.\n\n## Use Case\n\nUse DDL to replicate channel based (not pub/sub.. but not not pub/sub) documents for high uptime, low latency applications.  Client libraries modify local storage on demand and 'catch-up' to full snapshots.\n\nMy (Shane) initial use case is to send log files as well as a large JSON structure through DDL while allowing client feedback.  This is an interesting and possibly useful approach to handle online markets (crypto/stocks/beenie babies/...)\n\nOne example would be taking the large order book from an exchange and exporting it in full and incremental state over DDL and storing it in a differential object within client and server logic. Allowing for asyncronous object updates without websocket requirements would be a treat for everybody (polling ftw) while also .. allowing .. for websockets and protocols like zeromq.\n\n## Goals\n\nTake structured content and let several large nodes handle differential compression and analysis until there is a concensus and storage requirements are met.  Allow programming libraries to send full of partial document updates.\n\nProvide callback support for updates so that providers can measure requirements properly.\n\n## What I'd dig\n\nI'd like to see protobuf or other object based distribution solutions put in place - differential analysis would be a pain however.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fwhardier%2Fddl","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fwhardier%2Fddl","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fwhardier%2Fddl/lists"}