标准 PostgreSQL 是一款功能强大的免费开源解决方案。AlloyDB Omni 可为要求严苛的工作负载提供商业支持，为其提供增强的性能、更低的运维开销、高级功能以及直接的供应商支持。考虑到 AlloyDB Omni 在标准 PostgreSQL 的基础上新增的这些功能，那么为其支付的许可费用也是确有所值的。
AlloyDB Omni 在 PostgreSQL 的基础上新增的功能的摘要
AlloyDB Omni 在 PostgreSQL 的基础上新增了以下功能：
性能与可伸缩性：AlloyDB Omni 经过专门设计，与标准 PostgreSQL 相比，能够提供更高的事务性能、更快的分析速度（通过内置的列式引擎实现）以及更好的可伸缩性（通过提供更多 CPU 和内存资源实现）。
高级向量搜索：与标准 pgvector 及分层可导航小世界 (HNSW) 算法相比，AlloyDB Omni 使用 Google 的 ScaNN 索引来执行可扩容的向量搜索，速度更快、更节省内存。
自动管理 (Autopilot)：AlloyDB Omni 提供自适应完全清理 (vacuum)、自动内存管理和索引顾问等功能，可自动执行复杂的调优。这些功能可减轻运维负担并提高数据库稳定性。
bug 修复和补丁发布速度更快：Google 通过商业支持直接为 AlloyDB Omni 提供补丁和安全修复，发布速度可能比 PostgreSQL 社区发布流程更快。
集成式功能：与标准 PostgreSQL 相比，AlloyDB Omni 内置了混合事务处理和分析处理 (HTAP)、高级向量搜索及高可用性 (HA) 功能，减少了对外部工具或复杂配置的需求。
费用和许可：标准 PostgreSQL 是一款免费的开源软件。AlloyDB Omni 是一款商业软件，您可以免费部署它来用于开发和非商业用途。不过，您需要获得许可才能在生产环境中运行 AlloyDB Omni。尽管存在软件成本，但 AlloyDB Omni 所提供的高效功能仍具有不俗的总拥有成本 (TCO) 优势。
数据库功能对比
下表列出了 AlloyDB Omni 与 PostgreSQL 之间的功能差异：
功能
标准 PostgreSQL
AlloyDB Omni
AlloyDB Omni 的优势
核心兼容性
PostgreSQL 兼容性的基准标准。
全面兼容 PostgreSQL 15 和 PostgreSQL 16。
与标准 PostgreSQL 及客户端工具完全兼容。
现有应用的运行方式不变。
AlloyDB Omni 经过专门设计，能够取代标准 PostgreSQL 使用，此外还提供了一些额外的功能及性能方面的增强。
性能：在线事务处理 (OLTP)
其性能取决于硬件、操作系统调优、PostgreSQL 配置和工作负载的具体情况。
在标准配置中，对于可调整 CPU 核心数量的场景，通常随着 vCPU 数量的增多，回报比反而会下降。
与在类似硬件上运行的标准 PostgreSQL 相比，事务处理速度方面的性能最多可提升一倍。
经过专门设计，可随着资源的增加更有效地进行扩容。
AlloyDB Omni 使用内核增强功能并提供优化的资源利用率，能够在现代硬件上实现更高的吞吐量、更低的延迟时间及更高效的扩缩能力。这有助于提高数据库性能及性价比。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-09-05。"],[],[],null,["# AlloyDB Omni additions to standard PostgreSQL\n\nSelect a documentation version: Current (16.8.0)keyboard_arrow_down\n\n- [Current (16.8.0)](/alloydb/omni/current/docs/additions-to-postgresql)\n- [16.8.0](/alloydb/omni/16.8.0/docs/additions-to-postgresql)\n- [16.3.0](/alloydb/omni/16.3.0/docs/additions-to-postgresql)\n- [15.12.0](/alloydb/omni/15.12.0/docs/additions-to-postgresql)\n- [15.7.1](/alloydb/omni/15.7.1/docs/additions-to-postgresql)\n\n\u003cbr /\u003e\n\nThis page compares [AlloyDB Omni](/alloydb/omni/current/docs/overview) with standard community [PostgreSQL](https://www.postgresql.org/) in self-managed environments, and it highlights technical, operational, and functionality differences, which are most evident when you deploy AlloyDB Omni with Kubernetes operators. For more information, see the [AlloyDB Omni overview](/alloydb/omni/current/docs/overview).\n\n\u003cbr /\u003e\n\nA *self-managed database*---which can be on-premises, in other clouds, on\ndeveloper laptops, or on edge locations---means that the user must provision and\nmanage the underlying infrastructure, such as the hardware, operating system\n(OS), and networking.\n\nAlloyDB Omni is a high-performance, operationally efficient\ndatabase that offers the following features:\n\n- Integrated kernel enhancements, such as the columnar engine for analytics and Google's scalable nearest neighbors (ScaNN) index for vector search.\n- Autopilot features such as automatic memory management, adaptive autovacuum, and the index advisor, which simplify database management.\n- Google-provided vendor support, which provides potentially faster bug fixes.\n\nStandard PostgreSQL is a powerful and free open source solution.\nAlloyDB Omni provides commercial support for demanding workloads\nthat benefit from enhanced performance, reduced operational overhead, advanced\nfeatures, and direct vendor support. AlloyDB Omni additions to\nstandard PostgreSQL can outweigh licensing costs.\n\nSummary of AlloyDB Omni additions to PostgreSQL\n-----------------------------------------------\n\nAlloyDB Omni provides the following additions to PostgreSQL:\n\n- **Performance and scalability:** AlloyDB Omni is engineered for significantly higher transactional performance, superior analytical speed using a built-in columnar engine, and better scalability with more CPU and memory resources compared to standard PostgreSQL.\n- **Advanced vector search:** AlloyDB Omni uses Google's ScaNN index for faster, memory-efficient, scalable vector searches compared to standard `pgvector` and hierarchical navigable small world (HNSW).\n- **Automated management (autopilot):** AlloyDB Omni features like adaptive vacuum, automatic memory management, and the index advisor automate complex tuning. These features reduce operational burden and improve database stability.\n- **Faster bug fixes and patches:** With commercial support, Google provides patches and security fixes for AlloyDB Omni directly and potentially faster than the PostgreSQL community release process.\n- **Integrated features:** AlloyDB Omni's built in hybrid transactional and analytical processing (HTAP), advanced vector search, and high availability (HA) reduce the need for external tools or complex configurations compared to standard PostgreSQL.\n- **Cost and licensing:** Standard PostgreSQL is free open source software. AlloyDB Omni is commercial software that you can deploy at no cost for development and non-commercial purposes. However, you need a license to [run AlloyDB Omni in a production environment](/alloydb/omni/current/docs/run-alloydb-omni-production). Despite the software costs, AlloyDB Omni efficiency capabilities offer potential total cost of ownership (TCO) advantages.\n\nDatabase feature comparison\n---------------------------\n\nThe following table describes the feature differences between\nAlloyDB Omni and PostgreSQL:\n\nWhat's next\n-----------\n\n- Learn about [available AlloyDB Omni download and installation options](/alloydb/omni/current/docs/available-download-install-options).\n- [Install AlloyDB Omni on any UNIX-based environment that supports container runtimes](/alloydb/omni/current/docs/quickstart)."]]
