instance method `delete_matched`

Ruby on Rails 5.2.8.1

Since v5.2.8.1

Available in: v5.2.8.1 v6.0.6 v6.1.7.10 v7.0.10 v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

delete_matched(matcher, options = nil)

Cache Store API implementation.

Supports Redis KEYS glob patterns:

h?llo matches hello, hallo and hxllo
h*llo matches hllo and heeeello
h[ae]llo matches hello and hallo, but not hillo
h[^e]llo matches hallo, hbllo, ... but not hello
h[a-b]llo matches hallo and hbllo

Use \ to escape special characters if you want to match them verbatim.

See redis.io/commands/KEYS for more.

Failsafe: Raises errors.

Parameters

matcher req
options opt = nil

Source

# File activesupport/lib/active_support/cache/redis_cache_store.rb, line 226
      def delete_matched(matcher, options = nil)
        instrument :delete_matched, matcher do
          unless String === matcher
            raise ArgumentError, "Only Redis glob strings are supported: #{matcher.inspect}"
          end
          redis.with do |c|
            pattern = namespace_key(matcher, options)
            cursor = "0"
            # Fetch keys in batches using SCAN to avoid blocking the Redis server.
            begin
              cursor, keys = c.scan(cursor, match: pattern, count: SCAN_BATCH_SIZE)
              c.del(*keys) unless keys.empty?
            end until cursor == "0"
          end
        end
      end

Defined in activesupport/lib/active_support/cache/redis_cache_store.rb line 226 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveSupport::Cache::RedisCacheStore

Signature

Parameters