FIG-001/ WEIGHTED-LRU

bound aggregate weight.

Cache API-response-like records with logical KiB weights, protect entries through access, and trigger single or multiple LRU evictions from one insertion.

maxWeight limits aggregate application-defined weight. It does not measure retained JavaScript heap automatically.
This cache uses maxSize: 0 so weight is its only capacity limit; the normal default remains 100 entries.
Access calls cache.get(key) and moves that record to MRU. Weighted LRU removes the least recently used record, not the physically largest one.
Select an 8 KiB record at the default limit and add it to watch one insertion evict multiple older records until the aggregate fits.

↩ all examples

policy · weighted least recently used mode · live running source

weight · 7/8 KiB

entries · 3

lru · api:1

mru · api:3

evictions · 0

aggregate weight 7/ 8 KiB

user-defined logical payload cost, not measured heap memory

max weight · 8 KiB changing the limit resets the seeded cache

next response weight

onEvict log 0

select 8 KiB and add to trigger multi-eviction

rank

api response

weight / state

// seeded 1 + 2 + 4 KiB responses

policy · weighted LRU

maxSize · 0

calculator · logicalWeight

next out · api:1

mode · live

category · weighted-lru

sheet · sheet 01 / 01

⟳ to re-run