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Reduce allocations (#17584)

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* Reduce allocations

* Add stringsHasPrefixFold which can compare string prefixes, while ignoring case and not allocating.
* Reuse all msgp.Readers
* Reuse metadata buffers when not reading data.

* Make type safe. Make buffer 4K instead of 8.

* Unslice
This commit is contained in:
Klaus Post
2023-07-06 16:02:08 -07:00
committed by GitHub
parent 1bf23374a3
commit ff5988f4e0
21 changed files with 67 additions and 36 deletions
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4
cmd/api-response.go
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@@ -550,7 +550,7 @@ func generateListVersionsResponse(bucket, prefix, marker, versionIDMarker, delim
content.UserMetadata.Set(xhttp.AmzServerSideEncryptionCustomerAlgorithm, xhttp.AmzEncryptionAES)
}
for k, v := range cleanMinioInternalMetadataKeys(object.UserDefined) {
if strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower) {
if stringsHasPrefixFold(k, ReservedMetadataPrefixLower) {
// Do not need to send any internal metadata
// values to client.
continue
@@ -693,7 +693,7 @@ func generateListObjectsV2Response(bucket, prefix, token, nextToken, startAfter,
content.UserMetadata.Set(xhttp.AmzServerSideEncryptionCustomerAlgorithm, xhttp.AmzEncryptionAES)
}
for k, v := range cleanMinioInternalMetadataKeys(object.UserDefined) {
if strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower) {
if stringsHasPrefixFold(k, ReservedMetadataPrefixLower) {
// Do not need to send any internal metadata
// values to client.
continue