Align large-payload samples to 256 KiB and fix Durable Functions host.json keys#343
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…lt 256 KiB - Rename the sample env var EXTERNALIZE_THRESHOLD_BYTES to THRESHOLD_BYTES. - Change the default offload threshold from 900,000 to 262,144 bytes (256 KiB) to match the SDK default in Microsoft.DurableTask.Extensions.AzureBlobPayloads. - Correct a misleading README note: THRESHOLD_BYTES is sample-only glue mapped to the SDK's LargePayloadStorageOptions.ThresholdBytes (the option that must stay <= 1 MiB); the SDK extension does not read the env var itself. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
…set 256 KiB - LargePayloadFanOutFanIn used unbound host.json keys (largePayloadStorageEnabled / largePayloadStorageThresholdBytes), so payload offload was effectively disabled. Rename to the bound payloadStorageEnabled / payloadStorageThresholdBytes, per HostJsonOptions in WebJobs.Extensions.DurableTask.AzureManaged. - Set both Durable Functions samples' threshold to 262,144 bytes (256 KiB) to match the SDK default. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
Rename largePayloadStorage* to the bound payloadStorageEnabled / payloadStorageThresholdBytes keys (per HostJsonOptions in WebJobs.Extensions.DurableTask.AzureManaged) so the migration guidance configures keys the azureManaged provider actually reads. Demo value (10240) unchanged. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
YunchuWang
approved these changes
Jul 1, 2026
This was referenced Jul 1, 2026
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Summary
Aligns the .NET large-payload samples to the SDK's new default threshold of 262,144 bytes (256 KiB) and fixes host.json key bugs in the Durable Functions fan-out/fan-in sample and the migrate-backend-to-dts skill.
Related: the .NET SDK default is changing from 900,000 to 262,144 bytes in microsoft/durabletask-dotnet#755.