折扣適用於與購買 CUD 時使用的 Cloud Billing 帳戶相關聯的任何 Memorystore for Redis、Memorystore for Redis Cluster 或 Memorystore for Memcached 執行個體，但 Memorystore for Redis M1 容量級別的執行個體 (小於 5 GB) 除外。如要瞭解不適用於 Memorystore CUD 的資源，請參閱適用於 Memorystore for Redis CUD 的資源。
符合 Memorystore for Redis CUD 資格的資源
系統會自動將 Memorystore for Redis 承諾用量折扣，套用至帳單帳戶的 Memorystore for Redis、Memorystore for Redis Cluster 和 Memorystore for Memcached 執行個體支出。這項彈性功能可協助您在各個區域和專案中，充分運用承諾使用合約，不必手動操作，節省時間和金錢。
Memorystore for Redis CUD 不適用於 Cloud Storage 儲存空間、備份、輸出資料移轉或 Memorystore for Redis M1 容量層級執行個體 (小於 5 GB) 的支出。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-04 (世界標準時間)。"],[],[],null,["# Committed use discounts\n\nThis document describes spend-based committed use discounts (CUDs) for Memorystore for Redis.\n\nCommitted use discounts (CUDs) for Memorystore for Redis provide\ndiscounted prices in exchange for your commitment to continuously spend a\nminimum hourly amount on Memorystore for Redis capacity for a year or longer.\n\nMemorystore for Redis spend-based CUDs are ideal when your spending on\nMemorystore for Redis capacity involves a predictable minimum that you can\ncommit to for at least a year.\n\nMemorystore for Redis CUD commitments are fungible with\nMemorystore for Memcached instances.\n| **Important:** This page explains the new and improved committed use discounts (CUDs) program, which applies to any customers who purchase their first CUDs on or after **July 15, 2025** . Customers can opt in now to get the new CUD experience. For more information, see [Spend-based CUDs program improvements](/docs/cuds-multiprice).\n| **Note:** CUDs are only available for Redis instances with a size of 5 GB or greater.\n\nMemorystore for Redis CUD pricing\n---------------------------------\n\nMemorystore for Redis CUDs offer two levels of discounts, depending on the\ncommitment period:\n\n- **20% discount**: You get this by committing to a 1-year term. For the duration of your term, you pay the Memorystore for Redis CUD 1-year price (consumption model ID DD5B-8EB3-C48D) as your committed hourly spend amount.\n- **40% discount**: You get this by committing to a 3-year term. For the duration of your term, you pay the Memorystore for Redis CUD 3-year price (consumption model ID 8E4B-B283-45D8) as your committed hourly spend amount.\n\nWhen you purchase a commitment, you agree to pay a fixed hourly fee for a one\nor three-year term. Your monthly invoice shows usage charges using the\nCUD [consumption model](/billing/docs/resources/multiprice-cuds)\nprices for usage that falls within your commitment. You're charged $1 for\n$1 worth of commitment fees, and a corresponding credit applies so that the\ncommitment fee is offset for any utilized portion of your commitment.\nFor a full example, see\n[An example Memorystore for Redis CUD](#example).\n\nFor any unused portion of your commitment, the fee applies. The result\nis that you pay the flat commitment fee every hour, whether you use the\nservices or not, but commitment fees are then credited back to you for the\nused portions within the commitment amount.\n\nAny expenditure beyond the commitment gets billed at the on-demand rate.\nAs your usage grows, you can purchase additional commitments to receive\ndiscounts on increased expenditures not covered by previous commitments.\n\nThe CUD discount applies to any eligible usage in projects\nassociated with the Cloud Billing account.\n\nIf the on-demand rates change after you purchase a commitment,\nyour commitment fee doesn't change.\n\nThe discount applies to any eligible usage of Memorystore for Redis,\nMemorystore for Redis Cluster, or Memorystore for Memcached instances\nassociated with the Cloud Billing account used to purchase the CUD,\nwith the exception of Memorystore for Redis M1 capacity tier instances\n(less than 5 GB). For information on resources that are ineligible for\nMemorystore CUDs, see [Resources eligible for Memorystore for Redis CUDs](/memorystore/docs/redis/cuds#resources).\n\nResources eligible for Memorystore for Redis CUDs\n-------------------------------------------------\n\nMemorystore for Redis committed use discounts automatically apply to your\nspending on Memorystore for Redis, Memorystore for Redis Cluster, and\nMemorystore for Memcached instances for your billing account. This flexibility\nhelps you achieve a high utilization rate of your commitment across regions and\nprojects without manual intervention, saving you time and money.\n\nMemorystore for Redis CUDs don't apply to your spending on Cloud Storage storage, backup, outbound data transfer, or Memorystore for Redis M1 capacity tier instances (fewer than 5 GB).\n\nFor a list of applicable SKUs, see [Memorystore for Redis CUD Eligible SKUs](/skus/sku-groups/memorystore-for-redis-cud-eligible-skus).\n\n### Supported regions\n\nCommitted use discounts can be used for instances in all supported [Memorystore for Redis regions](/memorystore/docs/redis/regions).\n\nPurchase a Memorystore for Redis CUD\n------------------------------------\n\n| After your purchase a CUD, you can't cancel your commitment. Make sure the size and duration of your commitment aligns with both your historical and your expected minimum expenditure on Memorystore for Redis capacity. For more information, see [Canceling commitments](/docs/cuds-spend-based#canceling_commitments).\n\nTo purchase or manage Memorystore for Redis committed use discounts for your\nCloud Billing account, follow the instructions at\n[Purchasing spend-based\ncommitments](/docs/cuds-spend-based#purchasing).\n\nAn example Memorystore for Redis CUD scenario\n---------------------------------------------\n\nYour commitment should represent your expected minimum hourly\nexpenditure on Memorystore for Redis capacity across your projects\nover the next one or three years.\n\nAs an example, say that you have a 200 GB Standard Tier Memorystore for Redis\ninstance with no read replicas in the `us-central1` region.\n\nFrom the [pricing page](/memorystore/docs/redis/pricing), you can calculate the approximate hourly one-year commitment cost, as follows:\n\n- Expenditure in `us-central1`: 200 GB \\* $0.024 per GB per hour = $4.80 per hour\n\nIf you expect to spend that minimum of $4.80 per hour continuously for\nthe next year or more, then you can make a commitment for that amount.\nWhen purchasing that CUD, you would enter \"`$4.80`\" as\nthe hourly on-demand commitment amount.\n| In the legacy CUDs program, your commitment amount is the on-demand price instead. For more information about the differences between the legacy and new spend-based CUDs program, see [Spend-based CUDs program improvements](/docs/cuds-multiprice).\n\nIf, on the other hand, you expect to scale down the capacity\noccasionally, you can make a commitment for a lower amount. Any\nexpenditure greater than that limit is charged at the on-demand rate.\n\nAs a basis for comparison, compute the on-demand cost\nof Memorystore for Redis capacity, without the application of any commitment discounts:\n\n- Monthly cost based on on-demand pricing: $6.00 per hour \\* 730 hours = $4,380 per month\n\nFrom here, you can calculate the monthly costs and savings you would see\nunder a 1-year CUD, applying its 20% discount, compared to a year of\npaying the full on-demand rates:\n\n- Monthly cost of a 1-year, $6.00/hour commitment: ($6.00 per hour - 20% discount) \\* 730 hours = $3,504 per month\n- Total savings per month: $4,380 - $3,504 = $876\n- Total savings with a 1-year, $6.00/hour commitment: $876 per month \\* 12 months = **$10,512**\n\nYou can apply similar math to calculating the costs and savings of a\n3-year CUD, with its 40% discount compared to on-demand rates:\n\n- Monthly cost of a 3-year, $6.00/hour commitment: ($6.00 per hour - 40% discount) \\* 730 hours = $2,628 per month\n- Total savings per month: $4,380 - $2,628 = $1,752\n- Total savings with a 3-year, $6.00/hour commitment: $1,752 per month \\* 36 months = **$63,072**\n\nAs you can see, a commitment that covers your expected minimum\nMemorystore for Redis usage over the years to come can lead to significant\nsavings. Read on for our recommendations on choosing the right CUD size\nfor your Memorystore for Redis projects.\n\nRecommendations for choosing a commitment\n-----------------------------------------\n\nWhen considering the purchase of Memorystore for Redis CUDs, keep in mind\nthe following:\n\n- **Projects**: Determine the consistent baseline expenditure per project while calculating total commitment. Consider that production loads usually run 100% of the time, while development or staging environments might run intermittently.\n- **Resources**: If you frequently scale your resources up or down, consider purchasing CUDs only for their baseline predictable usage. If you have instances that you run only for bursts or brief durations, exclude them from your calculations.\n- Your commitment fee applies to every hour during the term of the commitment, regardless of actual usage. Choose your CUD's commitment amount carefully, based on both your historical Memorystore for Redis usage and your future expectations. As long as your use of Memorystore for Redis capacity stays higher than your committed expenditure level, you will enjoy the maximum possible discount for the length of that commitment.\n\nWhat's next\n-----------\n\n - Read [an overview of Memorystore for Redis pricing](/memorystore/docs/redis/pricing).\n\n - Learn [more about Google Cloud spend-based CUDs](/docs/cuds).\n\n - Learn how to [view your CUD reports](/billing/docs/how-to/cud-analysis).\n\n - Understand savings with [cost breakdown reports](/billing/docs/how-to/cost-breakdown)."]]
