Class: GeminiCraft::Cache

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

Overview

Enhanced in-memory cache for API responses with automatic cleanup

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Cache

Initialize the cache

Parameters:



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# File 'lib/gemini_craft/cache.rb', line 10

def initialize(config)
  @config = config
  @store = {}
  @timestamps = {}
  @access_times = {}
  @mutex = Mutex.new
  @cleanup_thread = nil

  start_cleanup_thread if @config.cache_enabled
end

Instance Method Details

#cleanup ⇒ Object

Remove expired entries from the cache



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# File 'lib/gemini_craft/cache.rb', line 78

def cleanup
  @mutex.synchronize do
    current_time = Time.now.to_i
    expired_keys = []

    @timestamps.each do |key, timestamp|
      expired_keys << key if current_time - timestamp > @config.cache_ttl
    end

    expired_keys.each { |key| remove_entry(key) }
    expired_keys.size
  end
end

#clear ⇒ Object

Clear the entire cache



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# File 'lib/gemini_craft/cache.rb', line 56

def clear
  @mutex.synchronize do
    @store.clear
    @timestamps.clear
    @access_times.clear
  end
end

#get(key) ⇒ String?

Get a value from the cache

Parameters:

  • key (String) —

    Cache key

Returns:

  • (String, nil) —

    Cached value or nil if not found/expired



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# File 'lib/gemini_craft/cache.rb', line 24

def get(key)
  @mutex.synchronize do
    return nil unless @store.key?(key)

    # Check if the entry has expired
    if expired?(key)
      remove_entry(key)
      return nil
    end

    # Update access time for LRU
    @access_times[key] = Time.now.to_i
    @store[key]
  end
end

#set(key, value) ⇒ Object

Set a value in the cache

Parameters:

  • key (String) —

    Cache key

  • value (String) —

    Value to cache



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# File 'lib/gemini_craft/cache.rb', line 43

def set(key, value)
  @mutex.synchronize do
    @store[key] = value
    current_time = Time.now.to_i
    @timestamps[key] = current_time
    @access_times[key] = current_time

    # Perform cleanup if cache is getting large
    cleanup_if_needed
  end
end

#stats ⇒ Hash

Get cache statistics

Returns:

  • (Hash) —

    Cache statistics



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# File 'lib/gemini_craft/cache.rb', line 66

def stats
  @mutex.synchronize do
    {
      size: @store.size,
      oldest_entry: @timestamps.values.min,
      newest_entry: @timestamps.values.max,
      total_keys: @timestamps.keys
    }
  end
end

#stop_cleanup_thread ⇒ Object

Stop the cleanup thread (for testing)



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# File 'lib/gemini_craft/cache.rb', line 93

def stop_cleanup_thread
  return unless @cleanup_thread

  @cleanup_thread.kill
  @cleanup_thread = nil
end