Couchbase distributed transaction processing technical principles inquiry

CouchBase is a popular open source distributed database. It has the characteristics of high concurrency and superiority and is widely used in various large service systems.Distributed transactions are one of the key technologies for data operation on multiple nodes.This article will explore the principles and practices of the CouchBase distributed transaction processing technology. The principles of COUCHBASE distributed transaction processing technology mainly include the principles of ACID transaction, CAS (Compare and SWAP) optimistic lock, and the writing and recovery of transaction logs.In CouchBase, use a series of operation steps, and use CAS to ensure data consistency on each node in these operation steps.In addition, CouchBase also uses transaction logs to record the execution process of transactions in order to perform data consistency maintenance during node recovery. In actual programming, you can demonstrate the process of distributed transactions through the following code fragments: Cluster cluster = CouchbaseCluster.create("127.0.0.1"); Bucket bucket = cluster.openBucket("myBucket"); JsonDocument doc1 = bucket.get("document1"); JsonDocument doc2 = bucket.get("document2"); doc1.content().put("key", "value1"); doc2.content().put("key", "value2"); bucket.replace(doc1); bucket.replace(doc2); cluster.disconnect(); In the above code, first created a cluster object through the CouchBaseCluster, and then opened a bucket called "MyBucket".Then obtained document data called "Document1" and "Document2" through the get method.Then the two documents were updated, and the updated data was written back to the barrel through the replace method.Finally, the connection with the CouchBase cluster was disconnected through the disconnect method. In addition to code examples, the configuration also needs to pay attention to starting transaction functions in the node configuration of the CouchBase database, and using the corresponding API interface in the program to perform transaction operations.In addition, in practical applications, it is necessary to consider issues such as concurrentness and performance optimization of transactions. In summary, the principles and practices of the CouchBase distributed transaction processing technology mainly include the principles of ACID transaction, the CAS optimistic lock, and the writing and recovery of transaction logs.In actual programming, it is necessary to perform transaction operations through the API interface, and pay attention to problems such as concurrentness and performance optimization to achieve efficient and stable distributed transactions.