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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/batch-rotate.go
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@@ -289,7 +289,7 @@ func (r *BatchJobKeyRotateV1) KeyRotate(ctx context.Context, api ObjectLayer, ob
)
encMetadata := make(map[string]string)
for k, v := range oi.UserDefined {
if strings.HasPrefix(strings.ToLower(k), ReservedMetadataPrefixLower) {
if stringsHasPrefixFold(k, ReservedMetadataPrefixLower) {
encMetadata[k] = v
}
}
@@ -401,7 +401,7 @@ func (r *BatchJobKeyRotateV1) Start(ctx context.Context, api ObjectLayer, job Ba
if len(r.Flags.Filter.Metadata) > 0 {
for _, kv := range r.Flags.Filter.Metadata {
for k, v := range info.Metadata {
if !strings.HasPrefix(strings.ToLower(k), "x-amz-meta-") && !isStandardHeader(k) {
if !stringsHasPrefixFold(k, "x-amz-meta-") && !isStandardHeader(k) {
continue
}
// We only need to match x-amz-meta or standardHeaders