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/Ruby on Rails 5.2

class ActiveSupport::Cache::FileStore

Parent:: ActiveSupport::Cache::Store

A cache store implementation which stores everything on the filesystem.

FileStore implements the Strategy::LocalCache strategy which implements an in-memory cache inside of a block.

Constants

DIR_FORMATTER
EXCLUDED_DIRS
FILENAME_MAX_SIZE
FILEPATH_MAX_SIZE
GITKEEP_FILES

Attributes

cache_path[R]

Public Class Methods

new(cache_path, options = nil) Show source

# File activesupport/lib/active_support/cache/file_store.rb, line 24
def initialize(cache_path, options = nil)
  super(options)
  @cache_path = cache_path.to_s
end

Calls superclass method ActiveSupport::Cache::Store.new

Public Instance Methods

cleanup(options = nil) Show source

# File activesupport/lib/active_support/cache/file_store.rb, line 39
def cleanup(options = nil)
  options = merged_options(options)
  search_dir(cache_path) do |fname|
    entry = read_entry(fname, options)
    delete_entry(fname, options) if entry && entry.expired?
  end
end

Preemptively iterates through all stored keys and removes the ones which have expired.

clear(options = nil) Show source

# File activesupport/lib/active_support/cache/file_store.rb, line 32
def clear(options = nil)
  root_dirs = exclude_from(cache_path, EXCLUDED_DIRS + GITKEEP_FILES)
  FileUtils.rm_r(root_dirs.collect { |f| File.join(cache_path, f) })
rescue Errno::ENOENT
end

Deletes all items from the cache. In this case it deletes all the entries in the specified file store directory except for .keep or .gitkeep. Be careful which directory is specified in your config file when using FileStore because everything in that directory will be deleted.

decrement(name, amount = 1, options = nil) Show source

# File activesupport/lib/active_support/cache/file_store.rb, line 55
def decrement(name, amount = 1, options = nil)
  modify_value(name, -amount, options)
end

Decrements an already existing integer value that is stored in the cache. If the key is not found nothing is done.

delete_matched(matcher, options = nil) Show source

# File activesupport/lib/active_support/cache/file_store.rb, line 59
def delete_matched(matcher, options = nil)
  options = merged_options(options)
  instrument(:delete_matched, matcher.inspect) do
    matcher = key_matcher(matcher, options)
    search_dir(cache_path) do |path|
      key = file_path_key(path)
      delete_entry(path, options) if key.match(matcher)
    end
  end
end

increment(name, amount = 1, options = nil) Show source

# File activesupport/lib/active_support/cache/file_store.rb, line 49
def increment(name, amount = 1, options = nil)
  modify_value(name, amount, options)
end

Increments an already existing integer value that is stored in the cache. If the key is not found nothing is done.