Class: RDF::Util::Cache
- Defined in:
- vendor/bundler/ruby/3.3.0/bundler/gems/rdf-884e3ef78084/lib/rdf/util/cache.rb
Overview
A Hash
-like cache that holds only weak references to the values it
caches, meaning that values contained in the cache can be garbage
collected. This allows the cache to dynamically adjust to changing
memory conditions, caching more objects when memory is plentiful, but
evicting most objects if memory pressure increases to the point of
scarcity.
While this cache is something of an internal implementation detail of RDF.rb, some external libraries do currently make use of it as well, including SPARQL and Spira. Do be sure to include any changes here in the RDF.rb changelog.
Direct Known Subclasses
Defined Under Namespace
Classes: ObjectSpaceCache, WeakRefCache
Instance Attribute Summary collapse
-
#capacity ⇒ Object
readonly
The configured cache capacity.
Instance Method Summary collapse
- #capacity? ⇒ Boolean (also: #has_capacity?)
-
#initialize(capacity = nil) ⇒ Cache
constructor
A new instance of Cache.
- #size ⇒ Integer
Constructor Details
Instance Attribute Details
#capacity ⇒ Object (readonly)
The configured cache capacity.
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-884e3ef78084/lib/rdf/util/cache.rb', line 21 def capacity @capacity end |
Instance Method Details
#capacity? ⇒ Boolean Also known as: has_capacity?
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-884e3ef78084/lib/rdf/util/cache.rb', line 56 def capacity? @capacity.equal?(-1) || @capacity > @cache.size end |
#size ⇒ Integer
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# File 'vendor/bundler/ruby/3.3.0/bundler/gems/rdf-884e3ef78084/lib/rdf/util/cache.rb', line 50 def size @cache.size end |