Drools
SQLite
Drools | SQLite | |
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13 | 40 | |
25 | 5,537 | |
- | - | |
0.0 | 0.0 | |
3 days ago | 3 days ago | |
Java | C | |
Apache License 2.0 | GNU General Public License v3.0 or later |
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Drools
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Ask HN: Where do I find good code to read?
I've met a few young programmers who heard somewhere that object-oriented programming was bad and they want to get the enlightenment of functional programming that they've heard about. Frequently they travel from job to job like itinerant martial artists always looking for somewhere where they practice the true technique but they always seem disappointed as it is just as easy if not easier to screw up handling errors with monads than it is with exceptions and they find analogies like "a monad is like a burrito" just get them more confused.
As for something profound I'd point you to
https://github.com/cerner/clara-rules
which many people will struggle with because like many other production rules engines in LISP (and many other examples of simple compilers), there is hardly any code! Contrast that to the orders of magnitude larger rules engine Drools
https://github.com/kiegroup/drools
which is so crazy-complicated primarily because the Drools language is Java-based so you need all sorts of things that Clara or CLIPS don't need.
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Drools VS zen - a user suggested alternative
2 projects | 2 Jun 2023
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SourceBuddy Brings Eval To Java
IMHO you're better off using something like https://www.drools.org/ for this. Non-devs writing code is a pipe-dream. It never works out.
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Thoughts on a business rules engine
https://www.drools.org/ an open source solution that allows you to use the UI to define rules. You can even import excel files.
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Any rust equivalents for java's Drools rule engine?
Hi all, I am doing a project in rust right now (a web server with axum, postgres, redis), and am in need of a good rule engine like Drools in java (https://www.drools.org/). From what I have searched, I couldn't find any that are well maintained or provide similar levels of functionality.
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Event-driven Ansible looks awsome
Also ... https://www.drools.org/
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Achieving Rule-based observability using Sidekick and Camunda
Drools - Drools - Business Rules Management System (Java™, Open Source)
- Drools - rule engine, DMN engine and complex event processing (CEP) engine for Java.
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Python vs. Java: Comparing the Pros, Cons, and Use Cases
Drools (a Business Rule Engine),
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Behavior Driven Testing and Drools
Hopefully you already know that Drools is a business rules management system. You write rules in either "drl" syntax, in spreadsheets, or in glorified flowcharts, and then let your application throw data at it.
SQLite
- Show HN: Roast my SQLite encryption at-rest
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A SQLite extension that brings column-oriented tables to SQLite
If you are into alternative storage engines for SQLite, there is also an LSM (Log-Structured Merge-tree) extension in the main repository that is not announced nor documented but seems to work. It’s based on the SQLite 4 project.
https://github.com/sqlite/sqlite/tree/master/ext/lsm1
https://www.charlesleifer.com/blog/lsm-key-value-storage-in-...
- SQLite License
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Ask HN: Where do I find good code to read?
The sqlite code base is really well done. Lots of documentation.
https://github.com/sqlite/sqlite
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Show HN: I wrote a RDBMS (SQLite clone) from scratch in pure Python
Especially the VM part: https://github.com/spandanb/learndb-py/blob/master/learndb/v...
Compare it with this: https://github.com/sqlite/sqlite/blob/master/src/vdbe.c
That's said, I'm curious how complete this LearnDB is. SQLite is hard to read not only it's old but also it covers a lot of SQL and following SQL spec makes hings complicated. SQLite has great test suite so it's nice if you run the suit against this implementation.
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SQLite Begin Concurrent
Correct, see the github mirror[1]. I don't know how well supported that feature is compared to main branch. If it was completely stable, then it would have already landed in the main stable branch. Clarity about the roadmap of that branch would be nice.
1. https://github.com/sqlite/sqlite/tree/begin-concurrent
- Why sqlite3 temp files were renamed 'etilqs_*' (2006)
- SQLite builds for WASI since 3.41.0
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SQLite VS sqlite_blaster - a user suggested alternative
2 projects | 17 Mar 2023
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Stop Saying “Technical Debt”
Including comprehensive comments, documentation and tests in a codebase takes time and effort.
Failing to do so creates code that is very difficult to maintain or for someone new to the codebase to understand.
However, time and effort may not be what the organization wants to pay for, and individuals may view their own incomprehensible code as something like job security, as they can't be replaced by someone else easily.
As an example of complicated code that's still well-documented, the open-source sqlite code is a good example, about 1/4 of the B-tree file is comments, every time a variable is defined there's a short note explaining what it's used for, every function has a comment header that's comprehensive, such that someone new to the codebase could construct a map of how it all works fairly quickly. It's a good model for how to avoid the problem:
https://github.com/sqlite/sqlite/blob/master/src/btree.c
What are some alternatives?
Easy Rules - The simple, stupid rules engine for Java
sqlcipher - SQLCipher is a standalone fork of SQLite that adds 256 bit AES encryption of database files and other security features.
RuleBook - 100% Java, Lambda Enabled, Lightweight Rules Engine with a Simple and Intuitive DSL
LevelDB - LevelDB is a fast key-value storage library written at Google that provides an ordered mapping from string keys to string values.
Camunda BPM - Flexible framework for workflow and decision automation with BPMN and DMN. Integration with Quarkus, Spring, Spring Boot, CDI.
RocksDB - A library that provides an embeddable, persistent key-value store for fast storage.
kogito-runtimes - This repository is a fork of apache/incubator-kie-kogito-runtimes. Please use upstream repository for development.
sqlite_orm - ❤️ SQLite ORM light header only library for modern C++
groovy - Apache Groovy: A powerful multi-faceted programming language for the JVM platform
bolt
notepad-plus-plus - Notepad++ official repository
phpMyAdmin - A web interface for MySQL and MariaDB