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What Is DDS?

<p>The DDS (Document Database Service) provided by Ping An Cloud is an online Non-Relational Database Service, being 100% MongoDB-compatible, secure, reliable, easy to use, and scalable. It can be adapted to any scenario of NoSQL that requires dynamic extension, free mode, flexibility, and efficiency. Ping An Cloud DDS deploys replica set architecture by default and provides complete solutions such as disaster recovery, backup, restoration, and monitoring. It provides user-defined consumptions based on multiple instance specifications.</p> <p>Ping An Cloud DDS supports:</p> <ul> <li>Multiple business scenarios: Rich index types such as single column, composite index, text index, geographical index, hash index, etc. It can greatly improve query execution efficiency and be applied in multiple scenarios such as IoT, online application, data storage, etc.</li> <li>Efficient memory access: It automatically adopts WiredTiger storage engine and provides different granularities of concurrency control, compression mechanism, and efficient cache. Its Document Level Lock characteristic perfectly supports database operation of high concurrency and high performance.</li> <li>Mass data storage: It adopts self-defined sharding and supports cloud-level scalability.</li> <li>GEO: DDS geographical index supports rich geographic information queries.</li> <li>Read/Write splitting: DDS cluster ensures high reliability of data by storing multiple data transcription and sets readPreference=secondaryPreferred in connection strings to realize Read/Write splitting.</li> </ul>
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