[[["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,["# Single-zone instances\n\nThis page gives an overview of single-zone instances for Memorystore for Valkey.\n\nFor instructions on provisioning a single-zone instance see [Create a single-zone instance](/memorystore/docs/valkey/create-instances#create_a_single-zone_instance).\n\nBy default, Memorystore for Valkey distributes an instance's nodes evenly among\navailable zones. For diagrams that show how nodes are distributed with this\nsetup, see [High availability and replicas](/memorystore/docs/valkey/ha-and-replicas).\n\nAlternatively, you can choose to create a single-zone instance. Single-zone\ninstances have lower latency than multi-zone instances because you can place\nyour clients in the same zone as the Valkey nodes and avoid cross-zone\ncommunication.\n\nYou choose the zone distribution mode (single-zone or multi-zone) during\ninstance creation. After it's created, the zone distribution mode can't be\nchanged.\n\nIf you connect to a single-zone instance from a client in the same zone, then\nyou aren't charged for [Consumer Data Processing](/vpc/pricing#psc-consumer-data-processing).\nFor more information, see [Network pricing](/memorystore/docs/valkey/pricing#network_pricing).\n\nAlthough we recommend provisioning a multi-zone instance with [High Availability](/memorystore/docs/valkey/ha-and-replicas), you should use the following recommendations for single-zone instances if they apply to you:\n\n- If you choose to provision a single-zone instance, you should enable\n replicas. Replicas reduce shard hotspots and make shards more\n resilient against single-node failures.\n\n- If you choose to provision an instance without replicas, you should still\n use a single-zone instance. For more information, see [Choose a single-zone instance if your instance doesn't use replicas](/memorystore/docs/valkey/general-best-practices#choose_a_single-zone_instance_if_your_instance_doesnt_use_replicas).\n\nSingle-zone instance diagram example\n------------------------------------"]]