a3e806ed61
This PR adds disk based edge caching support for minio server. Cache settings can be configured in config.json to take list of disk drives, cache expiry in days and file patterns to exclude from cache or via environment variables MINIO_CACHE_DRIVES, MINIO_CACHE_EXCLUDE and MINIO_CACHE_EXPIRY Design assumes that Atime support is enabled and the list of cache drives is fixed. - Objects are cached on both GET and PUT/POST operations. - Expiry is used as hint to evict older entries from cache, or if 80% of cache capacity is filled. - When object storage backend is down, GET, LIST and HEAD operations fetch object seamlessly from cache. Current Limitations - Bucket policies are not cached, so anonymous operations are not supported in offline mode. - Objects are distributed using deterministic hashing among list of cache drives specified.If one or more drives go offline, or cache drive configuration is altered - performance could degrade to linear lookup. Fixes #4026
52 lines
1.6 KiB
Go
52 lines
1.6 KiB
Go
/*
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* Minio Cloud Storage, (C) 2018 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"reflect"
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"testing"
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)
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// Tests cache exclude parsing.
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func TestParseCacheExclude(t *testing.T) {
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testCases := []struct {
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excludeStr string
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expectedPatterns []string
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success bool
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}{
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// Empty input.
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{"", []string{}, true},
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// valid input
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{"/home/drive1;/home/drive2;/home/drive3", []string{}, false},
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{"bucket1/*;*.png;images/trip/barcelona/*", []string{"bucket1/*", "*.png", "images/trip/barcelona/*"}, true},
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{"bucket1", []string{"bucket1"}, true},
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}
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for i, testCase := range testCases {
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excludes, err := parseCacheExcludes(testCase.excludeStr)
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if err != nil && testCase.success {
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t.Errorf("Test %d: Expected success but failed instead %s", i+1, err)
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}
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if err == nil && !testCase.success {
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t.Errorf("Test %d: Expected failure but passed instead", i+1)
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}
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if !reflect.DeepEqual(excludes, testCase.expectedPatterns) {
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t.Errorf("Expected %v, got %v", testCase.expectedPatterns, excludes)
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}
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}
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}
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