Drools
Features:
- The Java-based open source rule engine provides a powerful rule engine and business process management system.
- It supports complex rule logic and pattern matching, and provides rich rule syntax and function libraries.
- Provides a rule language (DRL) and a Java-based API, which is highly extensible.
- Supports rule-based reasoning, decision-making, and event processing.
scenes to be used:
- Complex business rules and decision-making logic scenarios: such as risk assessment, price calculation, preferential strategy, etc.
- Event-driven systems: Process real-time event streams and make decisions and processes based on rules.
- Business process management: can be used to manage and execute complex business processes, such as tasks, reviews, etc.
Aviator
Features:
- High performance, lightweight
- Supports complex expression calculations and conditional judgments, and provides a wealth of built-in functions and operators
- Support operator overloading
- It natively supports big integer and BigDecimal types and operations, and maintains consistent operation methods with general numeric types through operator overloading.
- Native support for regular expression types and matching operator =~
- Clojure-like seq library and lambda support can flexibly handle various collections
- Supports custom function access and various customization options
- Provides a concise expression language AviatorScript and a Java-based API
scenes to be used:
- Expression calculation: such as mathematical calculations, string processing, etc.
- Conditional judgment: such as judging whether a certain condition is met, selecting appropriate processing logic, etc.
- Data processing and transformation: large-scale data processing and transformation, such as data cleaning, data formatting, etc.
Easy Rules
Features:
- Simple and easy to use, focusing on handling simple business rules and decision-making logic.
- Provides a declarative way of defining rules.
- Supports rule priority and conditional judgment, and provides a Java-based API.
- It has good scalability and flexibility and can be easily integrated.
scenes to be used:
- Simple business rules and decision-making logic: such as approval process, permission control, etc.
Summary: Drools is suitable for processing complex business rules and decision-making logic, Aviator is suitable for performing expression calculations and conditional judgments, and Easy Rules is suitable for processing simple business rules and decision-making logic.
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