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Because Azure Cosmos DB Java SDK v4 has up to 20% enhanced throughput, TCP-based direct mode, bug fixes, and provide support for the latest backend service features, we’ll retire Async 2.x version of the Azure Cosmos DB Java SDK for SQL API on 31 August 2024. We recommend you make the switch early to gain the enhanced benefits of Azure Cosmos DB Java SDK 4.x. Start using SDK 4.x for net-new subscriptions/accounts. If you have a question, please post it in this thread.
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Learn more from this migration document.
If you have any additional queries regarding this retirement, please use comments on this thread to ask your specific queries and we will try our best to answer those queries.