github.com/matrixorigin/matrixone@v0.7.0/pkg/fileservice/cache.go (about)

     1  // Copyright 2022 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package fileservice
    16  
    17  import (
    18  	"context"
    19  
    20  	"github.com/matrixorigin/matrixone/pkg/util/toml"
    21  )
    22  
    23  type CacheKey struct {
    24  	Path   string
    25  	Offset int64
    26  	Size   int64
    27  }
    28  
    29  type CacheConfig struct {
    30  	MemoryCapacity toml.ByteSize `toml:"memory-capacity"`
    31  	DiskPath       string        `toml:"disk-path"`
    32  	DiskCapacity   toml.ByteSize `toml:"disk-capacity"`
    33  }
    34  
    35  type Cache interface {
    36  	Read(
    37  		ctx context.Context,
    38  		vector *IOVector,
    39  	) error
    40  	Update(
    41  		ctx context.Context,
    42  		vector *IOVector,
    43  	) error
    44  	Flush()
    45  	CacheStats() *CacheStats
    46  }