Maxwell 是一款流行的 CDC（Change Data Capture，变更数据捕获）工具，能够将 MySQL 的 Binlog 变更以统一的 JSON 格式实时同步到 Kafka、Kinesis 等消息中间件。Flink 在 flink-json 模块中内置了 maxwell-json 格式，可将 Maxwell JSON 消息直接解释为 Flink SQL 的 INSERT / ...

Canal Format 是 Flink 内置的 Changelog-Data-Capture（CDC，变更数据捕获）格式，用于将阿里 Canal 捕获的 MySQL 变更日志解析为 Flink SQL 的 INSERT / UPDATE / DELETE 消息流，也可将 Flink 表上的变更消息反向编码为 Canal JSON 输出到 Kafka 等消息系统。本文以 ...

SQL 和 MySQL 之间有什么区别？ SQL 是一种编程语言，可用于在关系数据库中存储和处理信息。MySQL 是最广泛采用的开源关系数据库，用作许多热门网站、应用程序和商业产品的主要关系数据存储。这两种技术协同工作，因此您可以在包含行和列的结构化表中存储和 ...

A syntax highlighting, code folding text editor for Java Swing applications.

When a client calls an order API and retries after a timeout, the server may have already successfully processed the first request, resulting in two orders. In this article, we will implement a ...

DB clients tend to be a chaotic mix of tools that vary slightly from team to team. Mac users have TablePlus, Windows users have HeidiSQL, and checking on Linux servers is done by typing directly into ...

Java 17; Spring Boot 4.1.0; Spring MVC; Thymeleaf; Spring Security (BCrypt, session authentication, CSRF); Jakarta Validation; Spring Data JPA/Hibernate; MySQL. Maven wrapper 3.9.16 builds the ...

A single quote is used in programming languages as a delimiter for character and string literals. In many programming languages, including C, C++, Java, and Python, single quotes are used to denote a ...

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ClickHouse — колоночная СУБД для аналитики. Как устроено хранение, где база обгоняет PostgreSQL, а где лишняя: таблица ...