Cache small integer to_s (0-999): avoids 267 Integer#to_s allocations per render cycle\n\nResult: {"status":"keep","combined_µs":4158,"parse_µs":2920,"render_µs":1238,"allocations":26128}

lib/liquid/utils.rb

@@ -96,8 +96,14 @@ module Liquid
       obj
     end
 
+    # Cached string representations for common small integers (0-999)
+    # Avoids repeated Integer#to_s allocations during rendering
+    SMALL_INT_STRINGS = Array.new(1000) { |i| i.to_s.freeze }.freeze
+
     def self.to_s(obj, seen = nil)
       case obj
+      when Integer
+        return (obj >= 0 && obj < 1000) ? SMALL_INT_STRINGS[obj] : obj.to_s
       when BigDecimal
         obj.to_s("F")
       when Hash