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36 lines
2.2 KiB
Markdown
36 lines
2.2 KiB
Markdown
# Limitations
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I.R.I.S. is a narrow S3 compatibility layer. Design frontend features around the behavior below.
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## Listing is not pageable
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`max-keys`, `continuation-token`, and `marker` are ignored. I.R.I.S. scans at most 5000 Google Drive nodes and then sets `IsTruncated=true`; it does not provide a continuation token, so additional results cannot be requested. The XML value `MaxKeys=1000` is a fixed compatibility value, not the real scan limit.
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Use narrow prefixes and `delimiter=/` for a file browser. Do not build an infinite-scrolling full-drive browser.
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## No server-side rename or move
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`CopyObject` and `UploadPartCopy` return `501 NotImplemented`. There is no server-side rename or move because both require copying. Implement rename/move as download, re-upload under the target key, then delete the original—subject to bandwidth, time, and error handling.
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## Unsupported S3 features
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- `ListBuckets`, `CreateBucket`, and `DeleteBucket`
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- batch `DeleteObjects`
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- object versioning, ACLs, object tags, lifecycle rules, and `x-amz-meta-*` user metadata
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- CopyObject and UploadPartCopy
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- discovering active multipart uploads: `ListMultipartUploads` always reports an empty list
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Bucket `?acl`, `?versioning`, and `?location` requests are currently treated as regular bucket listing requests rather than errors. Do not rely on this accidental compatibility.
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## Directories and objects
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Directories are physical Google Drive folders created from object-key path segments. I.R.I.S. does not create zero-byte directory marker objects. An empty prefix can therefore exist as a Drive folder without an S3 marker object.
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## Multipart behavior
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Parts must be uploaded strictly in consecutive order beginning at part 1. Parts are immutable after they have committed. An incomplete upload expires after 24 hours. `ETAG_STYLE=md5` returns Google Drive's file MD5 for completed multipart objects; `ETAG_STYLE=multipart` is available only for clients that require an S3-style composite ETag.
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## Quotas and plan limits
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Google Drive's free tier has 15 GB total storage and a 750 GB/day upload limit. Cloudflare applies request-size limits before a request reaches the Worker; use multipart uploads for large browser uploads.
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