Amazon dynamodb lock client performance optimization method in Java class library

Amazon Dynamodb is a distributed key value storage system that provides high throughput and low -delayed data storage services.DynamodB Lock Client is a Java class library for distributed lock management to ensure that resources in distributed environments are concurrently accessing safety.This article will introduce how to improve the efficiency of Amazon Dynamodb Lock Client through performance optimization. 1. Use reusable Dynamodb client To avoid creating a new Dynamodb client connection every time, we can use reusable client objects.Use AmazondynamodBClientBuilder to create a Amazondynamodb client and set some parameters, such as regions and vouchers.Then, when using Dynamodb Lock Client, you can reuse this client object, instead of creating a new object every time. AmazonDynamoDB client = AmazonDynamoDBClientBuilder.standard() .withCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials(accessKey, secretKey))) .withRegion(Regions.US_WEST_2) .build(); DynamoDBLockClient lockClient = new DynamoDBLockClient(client, tableName); 2. Lock with a long service life By default, DynamodB Lock Client uses a 60 -second lock life.In order to reduce lock competition and improve performance, you can try to increase the lock life, such as setting to 120 seconds or longer.This can reduce the refresh frequency and improve the concurrency performance of the system. DynamoDBLockRequest lockRequest = new DynamoDBLockRequest(lockName) .withLockDuration(120); DynamoDBLock lock = lockClient.tryAcquireLock(lockRequest); 3. Use BATCHWRITEITEM When we need to create multiple locks at the same time, we can use the BatchWriteItem operation to reduce the overhead of network transmission.BatchWriteitem allows us to write multiple locks at the same time at a time, which improves the efficiency of operation. List<DynamoDBLockRequest> lockRequests = new ArrayList<>(); lockRequests.add(new DynamoDBLockRequest("lock1")); lockRequests.add(new DynamoDBLockRequest("lock2")); List<LockItem> locks = lockClient.acquireLocks(lockRequests); 4. Metaphysical data of persistent lock DynamodB Lock Client defaults to save the metadata of the lock in memory, and the lock state will be lost when the application restarts.In order to avoid this, you can consider dating the metadata of the lock to the database, such as Dynamodb or RDS.In this way, even if the application restarts, the lock state can be retained without loss. DynamoDBLockClientOptions options = new DynamoDBLockClientOptions() .withMetadataTableName("metadata"); DynamoDBLockClient lockClient = new DynamoDBLockClient(client, tableName, options); Through the above performance optimization methods, we can improve the efficiency of Amazon Dynamodb Lock Client and achieve higher concurrent performance and resource security access.Note that the effect of optimization may be different due to the specific needs and scenes of the application, and appropriate adjustments and testing are needed according to your own situation.