summarty：With the rapid development of information technology, various types of databases emerge one after another. Logical replication is increasingly important, with which data can be synchronized between heterogeneous databases. Currently, the average serial decoding performance of logical replication in openGauss is only 3 to 5 Mbit/s, which cannot meet the requirements of real-time synchronization in heavy service pressure scenarios. As a result, logs are stacked, affecting services in the production cluster. Therefore, the parallel decoding feature is designed to enable multiple threads to perform decoding in parallel, improving the decoding performance. In basic scenarios, the decoding performance can reach 100 Mbit/s.
openGauss solutions as follow.
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