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Debezium系列之:postgresql从偏移量加载正确的最后一次提交 LSN
2022-07-05 18:45:00 【目标博客专家】
Debezium系列之:postgresql从偏移量加载正确的最后一次提交 LSN
一、认识PostgreSQL的LSN
- PostgreSQL LSN即Log sequence number,日志序列号,这是WAL日志唯一的、全局的标识。
- LSN记录wal日志的写入顺序,每条产生的wal日志都会有一个编号。
二、从偏移量加载最后一次提交的LSN
debezium-connector-postgres/src/main/java/io/debezium/connector/postgresql/PostgresOffsetContext.java
public PostgresOffsetContext load(Map<String,
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