Module cache 

Cache for the engine.

Modules

cache_size 🔒

Cache size of different cache value.

file_cache 🔒

A cache for files.

index 🔒

manifest_cache 🔒

A cache for manifest files.

write_cache 🔒

A write-through cache for remote object stores.

Structs

CacheManager

Manages cached data for the engine.

CacheManagerBuilder

Builder to construct a CacheManager.

CachedSstMeta 🔒

Cached SST metadata combines the parquet footer with the decoded region metadata.

CompactSstMeta 🔒

Compact, authoritative form of one SST’s metadata.

PageFragmentGroupKey 🔒

PageFragmentKey

Cache key for one byte fragment in an SST row group.

PageRangeCache

Byte-fragment cache for Parquet row-group reads.

PageRangeLookup

Result of looking up request ranges in the page range cache.

PageRangePart

One cached byte fragment that overlaps a requested range.

PrefilterKey 🔒

Key for a cached prefilter result.

PrefilterRowSelector 🔒

PreparedSstMeta 🔒

Both forms produced by decoding metadata after a cache miss.

RangeResultMemoryLimiter 🔒

SelectorResultKey

Cache key for time series row selector result.

SelectorResultValue

Cached result for time series row selector.

SstMetaKey 🔒

Cache key (region id, file id) for SST meta.

Enums

CacheStrategy

Cache strategies that may only enable a subset of caches.

SelectorResult

Result stored in the selector result cache.

SstMetaPreparation 🔒

Result of decoding SST metadata and attempting to encode its compact cache entry.

Constants

FILE_TYPE 🔒

Metrics type key for files on the local store.

INDEX_TYPE 🔒

Metrics type key for index files (puffin) on the local store.

PAGE_TYPE 🔒

Metrics type key for pages.

PREFILTER_RESULT_TYPE 🔒

Metrics type key for prefilter result cache.

RANGE_RESULT_CONCAT_MEMORY_LIMIT 🔒

RANGE_RESULT_CONCAT_MEMORY_PERMIT 🔒

RANGE_RESULT_TYPE 🔒

Metrics type key for range scan result cache.

SELECTOR_RESULT_TYPE 🔒

Metrics type key for selector result cache.

SST_META_DECODED_TYPE 🔒

Metrics type key for the optional decoded SST metadata acceleration tier.

SST_META_TYPE 🔒

Metrics type key for sst meta.

VECTOR_TYPE 🔒

Metrics type key for vector.

Functions

decode_sst_meta 🔒

Decodes SST metadata without preparing a compact cache entry.

decoded_meta_cache_weight 🔒

encode_compact_sst_meta 🔒

finish_sst_meta_preparation 🔒

infer_loaded_page_index_policy 🔒

meta_cache_weight 🔒

new_prefilter_result_cache 🔒

page_cache_weight 🔒

prefilter_result_cache_weight 🔒

prepare_sst_meta 🔒

Decodes SST metadata and attempts to encode both cache representations on the blocking runtime.

prepare_sst_meta_sync 🔒

Synchronously prepares SST metadata. Callers must run this on a blocking runtime.

range_result_cache_weight 🔒

removal_cause_str 🔒

satisfies_page_index_policy 🔒

selector_result_cache_hit

Increases selector cache hit metrics.

selector_result_cache_miss

Increases selector cache miss metrics.

selector_result_cache_weight 🔒

strip_column_indexes 🔒

strip_region_metadata_from_parquet 🔒

update_hit_miss 🔒

Updates cache hit/miss metrics.

vector_cache_weight 🔒

Type Aliases

CacheManagerRef

PageFragmentIndex 🔒

PageFragmentRangeIndex 🔒

PrefilterResultCache 🔒

RangeResultCache 🔒

Maps partition-range scan key to cached flat batches.

SelectorResultCache 🔒

Maps (file id, row group id, time series row selector) to SelectorResultValue.

SstDecodedMetaCache 🔒

Maps (region id, file id) to decoded SST metadata retained as an acceleration tier.

SstMetaCache 🔒

Maps (region id, file id) to fused SST metadata.

VectorCache 🔒

Maps [Value] to a vector that holds this value repeatedly.