DiskOptimizationStrategy (apache-cassandra API)

All Known Implementing Classes:

SpinningDiskOptimizationStrategy, SsdDiskOptimizationStrategy
```
public interface DiskOptimizationStrategy
```

Field Summary

Fields
Modifier and Type Field Description

static int MAX_BUFFER_SIZE

static int MIN_BUFFER_SIZE

static int MIN_BUFFER_SIZE_MASK

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`int`	`bufferSize(long recordSize)`
`default int`	`roundBufferSize(long size)`	Round up to the next multiple of 4k but no more than `MAX_BUFFER_SIZE`.
`static int`	`roundForCaching(int size, boolean roundUp)`	Round either up or down to the next power of two, which is required by the `ChunkCache.CachingRebufferer`, but capping between `MIN_BUFFER_SIZE` and `MAX_BUFFER_SIZE`.

- Field Detail
  - MIN_BUFFER_SIZE
```
static final int MIN_BUFFER_SIZE
```
    See Also:
    
    Constant Field Values
  - MIN_BUFFER_SIZE_MASK
```
static final int MIN_BUFFER_SIZE_MASK
```
    See Also:
    
    Constant Field Values
  - MAX_BUFFER_SIZE
```
static final int MAX_BUFFER_SIZE
```
    See Also:
    
    Constant Field Values
- Method Detail
  - bufferSize
```
int bufferSize(long recordSize)
```
    Parameters:
    
    recordSize - record size
    
    Returns:
    
    the buffer size for a given record size.
  - roundBufferSize
```
default int roundBufferSize(long size)
```
    Round up to the next multiple of 4k but no more than MAX_BUFFER_SIZE.
  - roundForCaching
```
static int roundForCaching(int size,
                           boolean roundUp)
```
    Round either up or down to the next power of two, which is required by the ChunkCache.CachingRebufferer, but capping between MIN_BUFFER_SIZE and MAX_BUFFER_SIZE.
    
    Parameters:
    
    size - - the size to round to a power of two, normally this is a buffer size that was previously returned by a bufferSize(long).
    
    roundUp - - whether to round up or down
    
    Returns:
    
    a value rounded to a power of two but never bigger than MAX_BUFFER_SIZE or smaller than MIN_BUFFER_SIZE.