SegmentSize (BlueDB 2.0.4 API)

java.lang.Object
- org.bluedb.api.SegmentSize<K>

Type Parameters:

K - the key type that this segment size is compatible with
```
public final class SegmentSize<K extends BlueKey>
extends java.lang.Object
```
This class contains public static final variables representing the segment size options available to BlueDB users. It is typed in order to ensure that the selected segment size is compatible with the key type of the BlueCollection.

Think of a collection as an on disk HashMap. Values are stored in a segment based on the value's grouping number. If only one value is in a segment then looking up that value by key is constant time. If there are a lot of values in the segment then looking up those values will be slower. However, it is important to limit the number of segments so that you don't end up using too many i-nodes (files and directories). Large segment sizes will result in more values being stored in each segment. This will result in slower lookup times, slower write speeds, faster retrieval of large amounts of data, and less usage of i-nodes.
- TimeKey and TimeFrameKey - Segment sizes are an amount of time for these key types. If you picked TIME_1_HOUR as your segment size then all values that fall within a certain hour will be grouped in the same segment and a new segment will be created for every hour that contains values. Based on the number of values you store per hour you can figure out how fast you will be using i-nodes and how many values will be stored per segment.
- IntegerKey and LongKey - Segment sizes represent how many ids would be stored in each segment. If you use an auto incremented long as the id of a LONG_256 segment sized collection then you'd end up with 256 values in each segment. Lookup time would still be pretty fast and you would only be using the necessary i-nodes. If you want to store a very large number of values you could consider larger segment sizes.
- UUIDKey and StringKey - Segment sizes represent how many hash values would be stored in each segment for these key types. If the hashCode method of these was perfect then you'd create a new segment every time you insert a value until the max number of segments and i-nodes is reached. From that point segments would fill up but no additional i-nodes would be used. It is important to pick a segment size that is not going to overuse i-nodes but that still gives you the lookup speed that you need as your collection grows. In the future we might support a better mechanism for increasing segment size as the collection grows instead of committing to one size.

Field Summary

Fields
Modifier and Type	Field and Description
`static SegmentSize<IntegerKey>`	`INT_128` 128 values per segment
`static SegmentSize<IntegerKey>`	`INT_1K` 1K values per segment
`static SegmentSize<IntegerKey>`	`INT_256` 256 values per segment
`static SegmentSize<IntegerKey>`	`INT_512` 512 values per segment
`static SegmentSize<LongKey>`	`LONG_128` 128 values per segment
`static SegmentSize<LongKey>`	`LONG_1K` 1K values per segment
`static SegmentSize<LongKey>`	`LONG_256` 256 values per segment
`static SegmentSize<LongKey>`	`LONG_512` 512 values per segment
`static SegmentSize<StringKey>`	`STRING_16M` 16M hash codes per segment.
`static SegmentSize<StringKey>`	`STRING_1M` 1M hash codes per segment.
`static SegmentSize<StringKey>`	`STRING_256K` 256K hash codes per segment.
`static SegmentSize<StringKey>`	`STRING_2M` 2M hash codes per segment.
`static SegmentSize<StringKey>`	`STRING_32M` 32M hash codes per segment.
`static SegmentSize<StringKey>`	`STRING_4M` 4M hash codes per segment.
`static SegmentSize<StringKey>`	`STRING_512K` 512K hash codes per segment.
`static SegmentSize<StringKey>`	`STRING_8M` 8M hash codes per segment.
`static SegmentSize<TimeKey>`	`TIME_1_DAY` All values in each day time interval will be grouped together in a segment
`static SegmentSize<TimeKey>`	`TIME_1_HOUR` All values in each hour time interval will be grouped together in a segment
`static SegmentSize<TimeKey>`	`TIME_1_MONTH` All values in each 30 day time interval will be grouped together in a segment
`static SegmentSize<TimeKey>`	`TIME_12_HOURS` All values in each 12 hour time interval will be grouped together in a segment
`static SegmentSize<TimeKey>`	`TIME_15_DAYS` All values in each 15 day time interval will be grouped together in a segment
`static SegmentSize<TimeKey>`	`TIME_2_HOURS` All values in each 2 hour time interval will be grouped together in a segment
`static SegmentSize<TimeKey>`	`TIME_3_MONTHS` All values in each 90 day time interval will be grouped together in a segment
`static SegmentSize<TimeKey>`	`TIME_5_DAYS` All values in each 5 day time interval will be grouped together in a segment
`static SegmentSize<TimeKey>`	`TIME_6_HOURS` All values in each 6 hour time interval will be grouped together in a segment
`static SegmentSize<TimeKey>`	`TIME_6_MONTHS` All values in each 180 day time interval will be grouped together in a segment
`static SegmentSize<TimeFrameKey>`	`TIME_FRAME_1_DAY` All values in each day time interval will be grouped together in a segment
`static SegmentSize<TimeFrameKey>`	`TIME_FRAME_1_HOUR` All values in each hour time interval will be grouped together in a segment
`static SegmentSize<TimeFrameKey>`	`TIME_FRAME_1_MONTH` All values in each 30 day time interval will be grouped together in a segment
`static SegmentSize<TimeFrameKey>`	`TIME_FRAME_12_HOURS` All values in each 12 hour time interval will be grouped together in a segment
`static SegmentSize<TimeFrameKey>`	`TIME_FRAME_15_DAYS` All values in each 15 day time interval will be grouped together in a segment
`static SegmentSize<TimeFrameKey>`	`TIME_FRAME_2_HOURS` All values in each 2 hour time interval will be grouped together in a segment
`static SegmentSize<TimeFrameKey>`	`TIME_FRAME_3_MONTHS` All values in each 90 day time interval will be grouped together in a segment
`static SegmentSize<TimeFrameKey>`	`TIME_FRAME_5_DAYS` All values in each 5 day time interval will be grouped together in a segment
`static SegmentSize<TimeFrameKey>`	`TIME_FRAME_6_HOURS` All values in each 6 hour time interval will be grouped together in a segment
`static SegmentSize<TimeFrameKey>`	`TIME_FRAME_6_MONTHS` All values in each 180 day time interval will be grouped together in a segment
`static SegmentSize<UUIDKey>`	`UUID_16M` 16M hash codes per segment.
`static SegmentSize<UUIDKey>`	`UUID_1M` 1M hash codes per segment.
`static SegmentSize<UUIDKey>`	`UUID_256K` 256K hash codes per segment.
`static SegmentSize<UUIDKey>`	`UUID_2M` 2M hash codes per segment.
`static SegmentSize<UUIDKey>`	`UUID_32M` 32M hash codes per segment.
`static SegmentSize<UUIDKey>`	`UUID_4M` 4M hash codes per segment.
`static SegmentSize<UUIDKey>`	`UUID_512K` 512K hash codes per segment.
`static SegmentSize<UUIDKey>`	`UUID_8M` 8M hash codes per segment.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type Method and Description

java.lang.String getName()
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`java.lang.String`	`getName()`

- Field Detail
  - TIME_1_HOUR
```
public static final SegmentSize<TimeKey> TIME_1_HOUR
```
    All values in each hour time interval will be grouped together in a segment
  - TIME_2_HOURS
```
public static final SegmentSize<TimeKey> TIME_2_HOURS
```
    All values in each 2 hour time interval will be grouped together in a segment
  - TIME_6_HOURS
```
public static final SegmentSize<TimeKey> TIME_6_HOURS
```
    All values in each 6 hour time interval will be grouped together in a segment
  - TIME_12_HOURS
```
public static final SegmentSize<TimeKey> TIME_12_HOURS
```
    All values in each 12 hour time interval will be grouped together in a segment
  - TIME_1_DAY
```
public static final SegmentSize<TimeKey> TIME_1_DAY
```
    All values in each day time interval will be grouped together in a segment
  - TIME_5_DAYS
```
public static final SegmentSize<TimeKey> TIME_5_DAYS
```
    All values in each 5 day time interval will be grouped together in a segment
  - TIME_15_DAYS
```
public static final SegmentSize<TimeKey> TIME_15_DAYS
```
    All values in each 15 day time interval will be grouped together in a segment
  - TIME_1_MONTH
```
public static final SegmentSize<TimeKey> TIME_1_MONTH
```
    All values in each 30 day time interval will be grouped together in a segment
  - TIME_3_MONTHS
```
public static final SegmentSize<TimeKey> TIME_3_MONTHS
```
    All values in each 90 day time interval will be grouped together in a segment
  - TIME_6_MONTHS
```
public static final SegmentSize<TimeKey> TIME_6_MONTHS
```
    All values in each 180 day time interval will be grouped together in a segment
  - TIME_FRAME_1_HOUR
```
public static final SegmentSize<TimeFrameKey> TIME_FRAME_1_HOUR
```
    All values in each hour time interval will be grouped together in a segment
  - TIME_FRAME_2_HOURS
```
public static final SegmentSize<TimeFrameKey> TIME_FRAME_2_HOURS
```
    All values in each 2 hour time interval will be grouped together in a segment
  - TIME_FRAME_6_HOURS
```
public static final SegmentSize<TimeFrameKey> TIME_FRAME_6_HOURS
```
    All values in each 6 hour time interval will be grouped together in a segment
  - TIME_FRAME_12_HOURS
```
public static final SegmentSize<TimeFrameKey> TIME_FRAME_12_HOURS
```
    All values in each 12 hour time interval will be grouped together in a segment
  - TIME_FRAME_1_DAY
```
public static final SegmentSize<TimeFrameKey> TIME_FRAME_1_DAY
```
    All values in each day time interval will be grouped together in a segment
  - TIME_FRAME_5_DAYS
```
public static final SegmentSize<TimeFrameKey> TIME_FRAME_5_DAYS
```
    All values in each 5 day time interval will be grouped together in a segment
  - TIME_FRAME_15_DAYS
```
public static final SegmentSize<TimeFrameKey> TIME_FRAME_15_DAYS
```
    All values in each 15 day time interval will be grouped together in a segment
  - TIME_FRAME_1_MONTH
```
public static final SegmentSize<TimeFrameKey> TIME_FRAME_1_MONTH
```
    All values in each 30 day time interval will be grouped together in a segment
  - TIME_FRAME_3_MONTHS
```
public static final SegmentSize<TimeFrameKey> TIME_FRAME_3_MONTHS
```
    All values in each 90 day time interval will be grouped together in a segment
  - TIME_FRAME_6_MONTHS
```
public static final SegmentSize<TimeFrameKey> TIME_FRAME_6_MONTHS
```
    All values in each 180 day time interval will be grouped together in a segment
  - INT_128
```
public static final SegmentSize<IntegerKey> INT_128
```
    128 values per segment
  - INT_256
```
public static final SegmentSize<IntegerKey> INT_256
```
    256 values per segment
  - INT_512
```
public static final SegmentSize<IntegerKey> INT_512
```
    512 values per segment
  - INT_1K
```
public static final SegmentSize<IntegerKey> INT_1K
```
    1K values per segment
  - LONG_128
```
public static final SegmentSize<LongKey> LONG_128
```
    128 values per segment
  - LONG_256
```
public static final SegmentSize<LongKey> LONG_256
```
    256 values per segment
  - LONG_512
```
public static final SegmentSize<LongKey> LONG_512
```
    512 values per segment
  - LONG_1K
```
public static final SegmentSize<LongKey> LONG_1K
```
    1K values per segment
  - UUID_256K
```
public static final SegmentSize<UUIDKey> UUID_256K
```
    256K hash codes per segment. Max of 16K segments or ~41,000 i-nodes (files and directories)
  - UUID_512K
```
public static final SegmentSize<UUIDKey> UUID_512K
```
    512K hash codes per segment. Max of 8K segments or ~16K i-nodes (files and directories)
  - UUID_1M
```
public static final SegmentSize<UUIDKey> UUID_1M
```
    1M hash codes per segment. Max of 4K segments or ~8K i-nodes (files and directories)
  - UUID_2M
```
public static final SegmentSize<UUIDKey> UUID_2M
```
    2M hash codes per segment. Max of 2K segments or ~4K i-nodes (files and directories)
  - UUID_4M
```
public static final SegmentSize<UUIDKey> UUID_4M
```
    4M hash codes per segment. Max of 1K segments or ~2K i-nodes (files and directories)
  - UUID_8M
```
public static final SegmentSize<UUIDKey> UUID_8M
```
    8M hash codes per segment. Max of 512 segments or ~1K i-nodes (files and directories)
  - UUID_16M
```
public static final SegmentSize<UUIDKey> UUID_16M
```
    16M hash codes per segment. Max of 256 segments or ~512 i-nodes (files and directories)
  - UUID_32M
```
public static final SegmentSize<UUIDKey> UUID_32M
```
    32M hash codes per segment. Max of 128 segments or ~256 i-nodes (files and directories)
  - STRING_256K
```
public static final SegmentSize<StringKey> STRING_256K
```
    256K hash codes per segment. Max of 16K segments or ~41,000 i-nodes (files and directories)
  - STRING_512K
```
public static final SegmentSize<StringKey> STRING_512K
```
    512K hash codes per segment. Max of 8K segments or ~16K i-nodes (files and directories)
  - STRING_1M
```
public static final SegmentSize<StringKey> STRING_1M
```
    1M hash codes per segment. Max of 4K segments or ~8K i-nodes (files and directories)
  - STRING_2M
```
public static final SegmentSize<StringKey> STRING_2M
```
    2M hash codes per segment. Max of 2K segments or ~4K i-nodes (files and directories)
  - STRING_4M
```
public static final SegmentSize<StringKey> STRING_4M
```
    4M hash codes per segment. Max of 1K segments or ~2K i-nodes (files and directories)
  - STRING_8M
```
public static final SegmentSize<StringKey> STRING_8M
```
    8M hash codes per segment. Max of 512 segments or ~1K i-nodes (files and directories)
  - STRING_16M
```
public static final SegmentSize<StringKey> STRING_16M
```
    16M hash codes per segment. Max of 256 segments or ~512 i-nodes (files and directories)
  - STRING_32M
```
public static final SegmentSize<StringKey> STRING_32M
```
    32M hash codes per segment. Max of 128 segments or ~256 i-nodes (files and directories)
- Method Detail
  - getName
```
public java.lang.String getName()
```

Class SegmentSize<K extends BlueKey>

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

TIME_1_HOUR

TIME_2_HOURS

TIME_6_HOURS

TIME_12_HOURS

TIME_1_DAY

TIME_5_DAYS

TIME_15_DAYS

TIME_1_MONTH

TIME_3_MONTHS

TIME_6_MONTHS

TIME_FRAME_1_HOUR

TIME_FRAME_2_HOURS

TIME_FRAME_6_HOURS

TIME_FRAME_12_HOURS

TIME_FRAME_1_DAY

TIME_FRAME_5_DAYS

TIME_FRAME_15_DAYS

TIME_FRAME_1_MONTH

TIME_FRAME_3_MONTHS

TIME_FRAME_6_MONTHS

INT_128

INT_256

INT_512

INT_1K

LONG_128

LONG_256

LONG_512

LONG_1K

UUID_256K

UUID_512K

UUID_1M

UUID_2M

UUID_4M

UUID_8M

UUID_16M

UUID_32M

STRING_256K

STRING_512K

STRING_1M

STRING_2M

STRING_4M

STRING_8M

STRING_16M

STRING_32M

Method Detail

getName