postgres/PostgreSQL/src/backend/utils/cache/ Source Tree

../
attoptcache.c
catcache.c
evtcache.c
inval.c InvalidationChunk InvalidationListHeader RELCACHECALLBACK SYSCACHECALLBACK TransInvalidationInfo
lsyscache.c
partcache.c
plancache.c
relcache.c opclasscacheent relidcacheent
relfilenodemap.c
relmapper.c RelMapFile RelMapping SerializedActiveRelMaps
spccache.c
syscache.c cachedesc
ts_cache.c
typcache.c DomainConstraintCache RecordCacheEntry SharedRecordTableEntry SharedRecordTableKey SharedRecordTypmodRegistry SharedTypmodTableEntry TypeCacheEnumData

Browse the source code of postgres/PostgreSQL/src/backend/utils/cache/ online