postgresql-replicant
Tabula
postgresql-replicant | Tabula | |
---|---|---|
5 | 6 | |
38 | 1,736 | |
- | 0.8% | |
3.2 | 0.0 | |
9 months ago | 4 days ago | |
Haskell | Java | |
BSD 3-clause "New" or "Revised" License | MIT License |
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postgresql-replicant
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PostgREST – Serve a RESTful API from Any Postgres Database
You can use a library like https://github.com/agentultra/postgresql-replicant or similar to hook in a data plane and use PostgREST as a data plane.
Your business logic works on the event stream that comes from the WAL.
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backend.sql and frontend.js = ♥
I wrote postgresql-replicant [0] in order to do this. It’s not a novel idea. It lets you read the logical replication stream.
On top of this library you can do all sorts of things: replicate data to Kafka or SQS, write a web socket server to publish changes to clients, etc.
[0] https://github.com/agentultra/postgresql-replicant
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Ask HN: What are some tools / libraries you built yourself?
https://github.com/agentultra/postgresql-replicant — stream delta changes from a PostgreSQL database. Not a novel concept or implementation but this library doesn’t exist in Haskell and that’s a shame because Haskell has lots of great libraries for working with streams.
https://github.com/agent ultra/DataVersion — type-directed data migration library. I needed to migrate some data in a document database that had no schema with years of data in it to a format that had a schema. I leveraged some other stuff to achieve it but this library was a key piece to being confident that the transformations were correct and complete. Migrated the database and backfill it with a Lambda function using this library.
Those are just the most recent ones.
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Haskell good for general use?
On my stream at https://twitch.tv/agentultra I've been working on a library to stream changes out of a PostgreSQL database. We've had to figure out how to use low-level libpq bindings, concurrency primitives, serializing and deserializing binary messages, etc. You can find the library here: https://github.com/agentultra/postgresql-replicant
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[Announce] postgresql-replicant-0.1.0.0-candidate: streaming PostgreSQL changes
You can star the repo and report issues at: https://github.com/agentultra/postgresql-replicant -- new contributors are welcome! I'm still working out a contribution guide, it's still super early on the project. I can be found here and on the FP Slack (https://fpchat-invite.herokuapp.com/) and on the FP Zulip (https://funprog.zulipchat.com)
Tabula
- Tabula – Extract tables from PDF files
- Extract tables from PDF files
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Ask HN: What are some tools / libraries you built yourself?
tabula-java [0], a library for extracting tables from PDF files. It started as a monolithic webapp written in JRuby, and we later extracted the table detection and segmentation logic into a Java library.
[0] https://github.com/tabulapdf/tabula-java
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Tabula: Liberate Data From PDF Tables [jRuby]
Ties together a Cuba web app, the tabula-java library and lauch4j to provide a platform executable.
What are some alternatives?
lowdefy - The config web stack for business apps - build internal tools, client portals, web apps, admin panels, dashboards, web sites, and CRUD apps with YAML or JSON.
OpenPDF - OpenPDF is a free Java library for creating and editing PDF files, with a LGPL and MPL open source license. OpenPDF is based on a fork of iText. We welcome contributions from other developers. Please feel free to submit pull-requests and bugreports to this GitHub repository.
GoJS, a JavaScript Library for HTML Diagrams - JavaScript diagramming library for interactive flowcharts, org charts, design tools, planning tools, visual languages.
Open HTML to PDF - An HTML to PDF library for the JVM. Based on Flying Saucer and Apache PDF-BOX 2. With SVG image support. Now also with accessible PDF support (WCAG, Section 508, PDF/UA)!
Pion WebRTC - Pure Go implementation of the WebRTC API
vscode-jq - jq LiveView Extension for VS Code
Zip Foundation - Effortless ZIP Handling in Swift
cakephp-swagger-bake - Automatically generate OpenAPI, Swagger, and Redoc documentation from your existing CakePHP code.
null - reasonable handling of nullable values
intercooler-js - Making AJAX as easy as anchor tags
tera - A template engine for Rust based on Jinja2/Django
QR-Code-generator - High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, Rust, C++, C.