Class: Whoosh::Cache::MemoryStore

Inherits:
Object
  • Object
show all
Defined in:
lib/whoosh/cache/memory_store.rb

Instance Method Summary collapse

Constructor Details

#initialize(default_ttl: 300) ⇒ MemoryStore

Returns a new instance of MemoryStore.



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# File 'lib/whoosh/cache/memory_store.rb', line 7

def initialize(default_ttl: 300)
  @store = {}
  @default_ttl = default_ttl
  @mutex = Mutex.new
end

Instance Method Details

#clear ⇒ Object 



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# File 'lib/whoosh/cache/memory_store.rb', line 47

def clear
  @mutex.synchronize { @store.clear }
  true
end

#close ⇒ Object 



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# File 'lib/whoosh/cache/memory_store.rb', line 52

def close
  # No-op
end

#delete(key) ⇒ Object 



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# File 'lib/whoosh/cache/memory_store.rb', line 42

def delete(key)
  @mutex.synchronize { @store.delete(key) }
  true
end

#fetch(key, ttl: nil) ⇒ Object 



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# File 'lib/whoosh/cache/memory_store.rb', line 34

def fetch(key, ttl: nil)
  existing = get(key)
  return existing unless existing.nil?
  value = yield
  set(key, value, ttl: ttl)
  Serialization::Json.decode(Serialization::Json.encode(value))
end

#get(key) ⇒ Object 



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# File 'lib/whoosh/cache/memory_store.rb', line 13

def get(key)
  @mutex.synchronize do
    entry = @store[key]
    return nil unless entry
    if entry[:expires_at] && Time.now.to_f > entry[:expires_at]
      @store.delete(key)
      return nil
    end
    entry[:value]
  end
end

#set(key, value, ttl: nil) ⇒ Object 



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# File 'lib/whoosh/cache/memory_store.rb', line 25

def set(key, value, ttl: nil)
  ttl ||= @default_ttl
  serialized = Serialization::Json.decode(Serialization::Json.encode(value))
  @mutex.synchronize do
    @store[key] = { value: serialized, expires_at: Time.now.to_f + ttl }
  end
  true
end