Class: Togul::Cache

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

Instance Method Summary collapse

Constructor Details

#initialize(ttl:) ⇒ Cache

Returns a new instance of Cache.



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# File 'lib/togul/cache.rb', line 5

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

Instance Method Details

#flush ⇒ Object 



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# File 'lib/togul/cache.rb', line 31

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

#get(key) ⇒ Boolean?

Returns cached value or nil on miss/expiry.

Returns:

  • (Boolean, nil) —

    cached value or nil on miss/expiry



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# File 'lib/togul/cache.rb', line 12

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

    entry[:value]
  end
end

#invalidate_flag(flag_key) ⇒ Object 



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# File 'lib/togul/cache.rb', line 35

def invalidate_flag(flag_key)
  prefix = "#{flag_key}:"
  @mutex.synchronize do
    @store.delete_if { |key, _| key.start_with?(prefix) }
  end
end

#set(key, value) ⇒ Object 



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# File 'lib/togul/cache.rb', line 22

def set(key, value)
  @mutex.synchronize do
    @store[key] = {
      value: value,
      expires_at: Time.now.to_f + @ttl
    }
  end
end