Module log

Expand description

Append-only storage with indexes and integrity checks.

See Log for the main structure. This module also provides surrounding types needed to construct the Log, including IndexDef and some iterators.

Structs§

FlushFilterContext: Potentially useful context for the flush filter function.
FoldDef: Definition of a “fold” function.
IndexDef: Definition of an index. It includes: name, function to extract index keys, and how much the index can lag on disk.
Log: An append-only storage with indexes and integrity checks.
LogIter: Iterator over all entries in a Log.
LogLookupIter: Iterator over Log entries selected by an index lookup.
LogMetadata: Metadata about index names, logical [Log] and [Index] file lengths.
LogRangeIter: Iterator over keys and LogLookupIter, filtered by an index prefix.
OpenOptions: Options used to configured how an Log is opened.
Wait: State to detect on-disk updates.

ChecksumType: What checksum function to use for an entry.
FlushFilterOutput: Output of a flush filter.
GenericPath: Abstract Path for [Log].
IndexOutput: Output of an index function. Bytes that can be used for lookups.