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Expression Language

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Architecture Digest
Architecture Digest
Jan 5, 2025 · Backend Development

A Comparative Overview of Java Expression Engines: Spring EL, OGNL, Aviator, MVEL, and Hutool

This article introduces and compares several Java expression engines—including Spring Expression Language, OGNL, Aviator, MVEL, and Hutool's expression facade—detailing their key features, typical use cases, security considerations, and providing utility class examples with code snippets for each engine.

Expression LanguageHutoolJava
0 likes · 12 min read
A Comparative Overview of Java Expression Engines: Spring EL, OGNL, Aviator, MVEL, and Hutool
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Feb 19, 2024 · Backend Development

Mastering Spring SpEL: From Basics to Real-World AOP Integration

An in‑depth guide to Spring Expression Language (SpEL) covering its core features, evaluation contexts, parser configuration, collection handling, operators, variables, bean references, and a practical AOP case study, all illustrated with concise Java code examples.

AOPBackend DevelopmentExpression Language
0 likes · 13 min read
Mastering Spring SpEL: From Basics to Real-World AOP Integration
Top Architect
Top Architect
Jan 6, 2023 · Backend Development

Janus Gateway: Architecture, Routing Rules, and Performance at Baidu

The article explains Baidu's Janus gateway—its motivations, three‑level routing design, variable and condition expression language, plugin implementations for disaster recovery and caching, and performance benchmarks—showing how it supports millions of QPS while remaining flexible and efficient.

Expression LanguagePerformancePlugin Architecture
0 likes · 11 min read
Janus Gateway: Architecture, Routing Rules, and Performance at Baidu
Zhuanzhuan Tech
Zhuanzhuan Tech
Jul 6, 2022 · Backend Development

Spring Expression Language (SpEL) Overview and Practical Usage

This article introduces Spring Expression Language (SpEL), explains its common syntax, demonstrates quick-start examples, shows real-world usage with AOP monitoring, and outlines its internal implementation, providing a concise guide for backend developers working with Spring.

AOPExpression LanguageJava
0 likes · 9 min read
Spring Expression Language (SpEL) Overview and Practical Usage
Yuewen Technology
Yuewen Technology
Sep 10, 2021 · Fundamentals

How to Build Your Own Expression Language with ANTLR and Java

This article walks through the complete process of designing a simple domain‑specific expression language, defining its grammar, generating a lexer and parser with ANTLR, implementing an AST visitor in Java, and integrating the engine into a Java project.

ANTLRCompilerDSL
0 likes · 16 min read
How to Build Your Own Expression Language with ANTLR and Java