From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jake Potrebic <jake.m.potrebic@gmail.com>
Date: Sun, 20 Mar 2022 22:06:47 -0700
Subject: [PATCH] cache resource keys


diff --git a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
index 4aa7ea31c9d0e0bb5522301dc111d6a4a2e421fc..a10ca7df7863d76e2b32bf414437cbfc6d35c9b7 100644
--- a/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
+++ b/src/main/java/org/bukkit/craftbukkit/block/CraftBlock.java
@@ -367,12 +367,13 @@ public class CraftBlock implements Block {
         return (biome == null) ? Biome.CUSTOM : biome;
     }
 
+    private static final java.util.Map<org.bukkit.block.Biome, net.minecraft.resources.ResourceKey<net.minecraft.world.level.biome.Biome>> BIOME_KEY_CACHE = Collections.synchronizedMap(new java.util.EnumMap<>(Biome.class)); // Paper
     public static Holder<net.minecraft.world.level.biome.Biome> biomeToBiomeBase(net.minecraft.core.Registry<net.minecraft.world.level.biome.Biome> registry, Biome bio) {
         if (bio == null || bio == Biome.CUSTOM) {
             return null;
         }
 
-        return registry.getHolderOrThrow(ResourceKey.create(Registries.BIOME, CraftNamespacedKey.toMinecraft(bio.getKey())));
+        return registry.getHolderOrThrow(BIOME_KEY_CACHE.computeIfAbsent(bio, b -> ResourceKey.create(Registries.BIOME, CraftNamespacedKey.toMinecraft(b.getKey())))); // Paper - cache key
     }
 
     @Override
diff --git a/src/main/java/org/bukkit/craftbukkit/tag/CraftEntityTag.java b/src/main/java/org/bukkit/craftbukkit/tag/CraftEntityTag.java
index e0bf615fb1b99abbab2be55a4ee345204b36e218..7b3b12b4b2f5dbd37e23a7f5a0ad2abd04d259e2 100644
--- a/src/main/java/org/bukkit/craftbukkit/tag/CraftEntityTag.java
+++ b/src/main/java/org/bukkit/craftbukkit/tag/CraftEntityTag.java
@@ -16,9 +16,10 @@ public class CraftEntityTag extends CraftTag<net.minecraft.world.entity.EntityTy
         super(registry, tag);
     }
 
+    private static final java.util.Map<org.bukkit.entity.EntityType, net.minecraft.resources.ResourceKey<net.minecraft.world.entity.EntityType<?>>> KEY_CACHE = java.util.Collections.synchronizedMap(new java.util.EnumMap<>(EntityType.class)); // Paper
     @Override
     public boolean isTagged(EntityType entity) {
-        return registry.getHolderOrThrow(ResourceKey.create(Registries.ENTITY_TYPE, CraftNamespacedKey.toMinecraft(entity.getKey()))).is(tag);
+        return registry.getHolderOrThrow(KEY_CACHE.computeIfAbsent(entity, type -> ResourceKey.create(Registries.ENTITY_TYPE, CraftNamespacedKey.toMinecraft(type.getKey())))).is(tag); // Paper - cache key
     }
 
     @Override