All Known Subinterfaces:

AdjustableDatabaseAdapterConfig
```
public interface DatabaseAdapterConfig
```
Base database-adapter configuration type.
DatabaseAdapter implementations that need more configuration options must extend this interface, have the Value.Immutable annotation and declare the with... methods implemented by "immutables".

Field Summary

Fields
Modifier and Type	Field	Description
`static long`	`DEFAULT_ASSUMED_WALL_CLOCK_DRIFT_MICROS`
`static int`	`DEFAULT_ATTACHMENT_KEYS_BATCH_SIZE`
`static int`	`DEFAULT_COMMIT_RETRIES`
`static int`	`DEFAULT_COMMIT_TIMEOUT`
`static int`	`DEFAULT_KEY_LIST_DISTANCE`
`static int`	`DEFAULT_KEY_LIST_ENTITY_PREFETCH`
`static float`	`DEFAULT_KEY_LIST_HASH_LOAD_FACTOR`
`static int`	`DEFAULT_MAX_ENTITY_SIZE`
`static int`	`DEFAULT_MAX_KEY_LIST_ENTITY_SIZE`
`static int`	`DEFAULT_PARENTS_PER_COMMIT`
`static int`	`DEFAULT_PARENTS_PER_REFLOG_ENTRY`
`static java.lang.String`	`DEFAULT_REPOSITORY_ID`
`static int`	`DEFAULT_RETRY_INITIAL_SLEEP_MILLIS_LOWER`
`static int`	`DEFAULT_RETRY_INITIAL_SLEEP_MILLIS_UPPER`
`static int`	`DEFAULT_RETRY_MAX_SLEEP_MILLIS`

Method Summary

All Methods Instance Methods Default Methods
Modifier and Type	Method	Description
`default long`	`currentTimeInMicros()`	Returns the current time in microseconds since epoch.
`default long`	`getAssumedWallClockDriftMicros()`	The assumed wall-clock drift between multiple Nessie instances in microseconds.
`default int`	`getAttachmentKeysBatchSize()`	The maximum chunk size passed down to the actual database when `fetching` or `putting` content attachments.
`default java.time.Clock`	`getClock()`	The `Clock` to use.
`default int`	`getCommitRetries()`	Maximum retries for CAS-like operations.
`default long`	`getCommitTimeout()`	Timeout for CAS-like operations in milliseconds.
`default int`	`getKeyListDistance()`	Each `n`-th `CommitLogEntry`, where `n ==` value of this parameter, will contain a "full" `KeyList`.
`default int`	`getKeyListEntityPrefetch()`	The number of adjacent key-list-entities to fetch, defaults to 0.
`default float`	`getKeyListHashLoadFactor()`	Configures key-list hash-table load-factor for the open-addressing hash map used for key-lists.
`default int`	`getMaxKeyListEntitySize()`	Maximum size of a database object/row.
`default int`	`getMaxKeyListSize()`	Maximum size of a database object/row.
`default int`	`getParentsPerCommit()`	The number of parent-commit-hashes stored in `CommitLogEntry.getParents()`.
`default int`	`getParentsPerRefLogEntry()`	The number of Ancestor (reflogId, commitHash) stored in `RefLog.getParents()`.
`default java.lang.String`	`getRepositoryId()`	A free-form string that identifies a particular Nessie storage repository.
`default long`	`getRetryInitialSleepMillisLower()`	When the database adapter has to retry an operation due to a concurrent, conflicting update to the database state, this parameter defines the initial lower bound of the sleep time.
`default long`	`getRetryInitialSleepMillisUpper()`	When the database adapter has to retry an operation due to a concurrent, conflicting update to the database state, this parameter defines the initial upper bound of the sleep time.
`default long`	`getRetryMaxSleepMillis()`	When the database adapter has to retry an operation due to a concurrent, conflicting update to the database state, this parameter defines the maximum sleep time.

- Field Detail
  - DEFAULT_REPOSITORY_ID
```
static final java.lang.String DEFAULT_REPOSITORY_ID
```
    See Also:
    
    Constant Field Values
  - DEFAULT_PARENTS_PER_COMMIT
```
static final int DEFAULT_PARENTS_PER_COMMIT
```
    See Also:
    
    Constant Field Values
  - DEFAULT_KEY_LIST_DISTANCE
```
static final int DEFAULT_KEY_LIST_DISTANCE
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MAX_ENTITY_SIZE
```
static final int DEFAULT_MAX_ENTITY_SIZE
```
    See Also:
    
    Constant Field Values
  - DEFAULT_MAX_KEY_LIST_ENTITY_SIZE
```
static final int DEFAULT_MAX_KEY_LIST_ENTITY_SIZE
```
    See Also:
    
    Constant Field Values
  - DEFAULT_KEY_LIST_HASH_LOAD_FACTOR
```
static final float DEFAULT_KEY_LIST_HASH_LOAD_FACTOR
```
    See Also:
    
    Constant Field Values
  - DEFAULT_KEY_LIST_ENTITY_PREFETCH
```
static final int DEFAULT_KEY_LIST_ENTITY_PREFETCH
```
    See Also:
    
    Constant Field Values
  - DEFAULT_COMMIT_TIMEOUT
```
static final int DEFAULT_COMMIT_TIMEOUT
```
    See Also:
    
    Constant Field Values
  - DEFAULT_COMMIT_RETRIES
```
static final int DEFAULT_COMMIT_RETRIES
```
    See Also:
    
    Constant Field Values
  - DEFAULT_PARENTS_PER_REFLOG_ENTRY
```
static final int DEFAULT_PARENTS_PER_REFLOG_ENTRY
```
    See Also:
    
    Constant Field Values
  - DEFAULT_RETRY_INITIAL_SLEEP_MILLIS_LOWER
```
static final int DEFAULT_RETRY_INITIAL_SLEEP_MILLIS_LOWER
```
    See Also:
    
    Constant Field Values
  - DEFAULT_RETRY_INITIAL_SLEEP_MILLIS_UPPER
```
static final int DEFAULT_RETRY_INITIAL_SLEEP_MILLIS_UPPER
```
    See Also:
    
    Constant Field Values
  - DEFAULT_RETRY_MAX_SLEEP_MILLIS
```
static final int DEFAULT_RETRY_MAX_SLEEP_MILLIS
```
    See Also:
    
    Constant Field Values
  - DEFAULT_ASSUMED_WALL_CLOCK_DRIFT_MICROS
```
static final long DEFAULT_ASSUMED_WALL_CLOCK_DRIFT_MICROS
```
    See Also:
    
    Constant Field Values
  - DEFAULT_ATTACHMENT_KEYS_BATCH_SIZE
```
static final int DEFAULT_ATTACHMENT_KEYS_BATCH_SIZE
```
    See Also:
    
    Constant Field Values
- Method Detail
  - getRepositoryId
```
@Default
default java.lang.String getRepositoryId()
```
    A free-form string that identifies a particular Nessie storage repository.
    When remote (shared) storage is used, multiple Nessie repositories may co-exist in the same database (and in the same schema). In that case this configuration parameter can be used to distinguish those repositories.
    All DatabaseAdapter implementations must respect this parameter.
  - getParentsPerCommit
```
@Default
default int getParentsPerCommit()
```
    The number of parent-commit-hashes stored in CommitLogEntry.getParents(). Defaults to 20.
  - getKeyListDistance
```
@Default
default int getKeyListDistance()
```
    Each n-th CommitLogEntry, where n == value of this parameter, will contain a "full" KeyList. Defaults to 20.
  - getMaxKeyListSize
```
@Default
default int getMaxKeyListSize()
```
    Maximum size of a database object/row.
    This parameter is respected for KeyList in a CommitLogEntry.
    Not all kinds of databases have hard limits on the maximum size of a database object/row.
    This value must not be "on the edge" - means: it must leave enough room for a somewhat large-ish list via CommitLogEntry.getKeyListsIds(), database-serialization overhead and similar.
    Values <=0 are illegal, defaults to 250000.
  - getMaxKeyListEntitySize
```
@Default
default int getMaxKeyListEntitySize()
```
    Maximum size of a database object/row.
    This parameter is respected for KeyListEntity.
    Not all kinds of databases have hard limits on the maximum size of a database object/row.
    This value must not be "on the edge" - means: it must leave enough room for database-serialization overhead and similar.
    Values <=0 are illegal, defaults to 1000000.
  - getKeyListHashLoadFactor
```
@Default
default float getKeyListHashLoadFactor()
```
    Configures key-list hash-table load-factor for the open-addressing hash map used for key-lists.
    Small segments and load factors above 0.65 are bad, as those would lead to many database fetches. Good configurations, that usually lead to only one additional key-list segment fetch are these:
    
    segment size of 128kB or more with a load factor of 0.65
    segment sizes of 64kB or more with a load factor of 0.45
  - getKeyListEntityPrefetch
```
@Default
default int getKeyListEntityPrefetch()
```
    The number of adjacent key-list-entities to fetch, defaults to 0.
    Applied to key-lists written by Nessie since 0.31.0 using the CommitLogEntry.KeyListVariant.OPEN_ADDRESSING format.
  - getCommitTimeout
```
@Default
default long getCommitTimeout()
```
    Timeout for CAS-like operations in milliseconds. Default is 500 milliseconds.
    
    See Also:
    
    getCommitRetries(), getRetryInitialSleepMillisLower(), getRetryInitialSleepMillisUpper(), getRetryMaxSleepMillis()
  - getCommitRetries
```
@Default
default int getCommitRetries()
```
    Maximum retries for CAS-like operations. Default is unlimited.
    
    See Also:
    
    getCommitTimeout(), getRetryInitialSleepMillisLower(), getRetryInitialSleepMillisUpper(), getRetryMaxSleepMillis()
  - getRetryInitialSleepMillisLower
```
@Default
default long getRetryInitialSleepMillisLower()
```
    When the database adapter has to retry an operation due to a concurrent, conflicting update to the database state, this parameter defines the initial lower bound of the sleep time. Default is 5 ms.
    
    See Also:
    
    getCommitRetries(), getCommitTimeout(), getRetryInitialSleepMillisUpper(), getRetryMaxSleepMillis()
  - getRetryInitialSleepMillisUpper
```
@Default
default long getRetryInitialSleepMillisUpper()
```
    When the database adapter has to retry an operation due to a concurrent, conflicting update to the database state, this parameter defines the initial upper bound of the sleep time. Default is 25 ms.
    
    See Also:
    
    getCommitRetries(), getCommitTimeout(), getRetryInitialSleepMillisLower(), getRetryMaxSleepMillis()
  - getRetryMaxSleepMillis
```
@Default
default long getRetryMaxSleepMillis()
```
    When the database adapter has to retry an operation due to a concurrent, conflicting update to the database state, this parameter defines the maximum sleep time. Each retry doubles the lower and upper bounds of the random sleep time, unless the doubled upper bound would exceed the value of this configuration property. Default is 75 ms.
    
    See Also:
    
    getCommitRetries(), getCommitTimeout(), getRetryInitialSleepMillisLower(), getRetryInitialSleepMillisUpper()
  - getClock
```
@Default
default java.time.Clock getClock()
```
    The Clock to use.
  - currentTimeInMicros
```
@Redacted
@Auxiliary
@NonAttribute
default long currentTimeInMicros()
```
    Returns the current time in microseconds since epoch.
  - getParentsPerRefLogEntry
```
@Default
default int getParentsPerRefLogEntry()
```
    The number of Ancestor (reflogId, commitHash) stored in RefLog.getParents(). Defaults to 20.
  - getAssumedWallClockDriftMicros
```
@Default
default long getAssumedWallClockDriftMicros()
```
    The assumed wall-clock drift between multiple Nessie instances in microseconds.
  - getAttachmentKeysBatchSize
```
@Default
default int getAttachmentKeysBatchSize()
```
    The maximum chunk size passed down to the actual database when fetching or putting content attachments.
    Concrete database adapter implementation may silently change this limit.

Interface DatabaseAdapterConfig

Field Summary

Method Summary

Field Detail

DEFAULT_REPOSITORY_ID

DEFAULT_PARENTS_PER_COMMIT

DEFAULT_KEY_LIST_DISTANCE

DEFAULT_MAX_ENTITY_SIZE

DEFAULT_MAX_KEY_LIST_ENTITY_SIZE

DEFAULT_KEY_LIST_HASH_LOAD_FACTOR

DEFAULT_KEY_LIST_ENTITY_PREFETCH

DEFAULT_COMMIT_TIMEOUT

DEFAULT_COMMIT_RETRIES

DEFAULT_PARENTS_PER_REFLOG_ENTRY

DEFAULT_RETRY_INITIAL_SLEEP_MILLIS_LOWER

DEFAULT_RETRY_INITIAL_SLEEP_MILLIS_UPPER

DEFAULT_RETRY_MAX_SLEEP_MILLIS

DEFAULT_ASSUMED_WALL_CLOCK_DRIFT_MICROS

DEFAULT_ATTACHMENT_KEYS_BATCH_SIZE

Method Detail

getRepositoryId

getParentsPerCommit

getKeyListDistance

getMaxKeyListSize

getMaxKeyListEntitySize

getKeyListHashLoadFactor

getKeyListEntityPrefetch

getCommitTimeout

getCommitRetries

getRetryInitialSleepMillisLower

getRetryInitialSleepMillisUpper

getRetryMaxSleepMillis

getClock

currentTimeInMicros

getParentsPerRefLogEntry

getAssumedWallClockDriftMicros

getAttachmentKeysBatchSize