add most common packet spam fixes

readme.md

@@ -41,6 +41,23 @@ collisions:
   max-entity-collisions: 2
 ```
 
+### Command suggestion packet spam
+
+Some commands on the server might have a lot of logic involved with their command suggestions. This can be exploited by
+sending a lot of packets that request the server to send suggestions for the command. This can be mitigated by setting
+packet limit for command suggestions that is just slightly above fast rate of typing commands, so normal players won't
+be affected.
+
+`paper-global.yml`
+```yaml
+packet-limiter:
+  overrides:
+    ServerboundCommandSuggestionPacket:
+      action: DROP
+      interval: 1.0
+      max-packet-rate: 15.0
+```
+
 ### Command spam
 
 While even spigot will protect you from this exploit, there's a slight oversight that will enable a single command to be
@@ -101,6 +118,22 @@ entity_timeouts:
   SNOWBALL: 200
 ```
 
+### Recipe book spam
+
+Malicious players can use auto clicker or a mod to switch between recipe book recipes extremely quickly. This is pretty
+expensive operation for the server and can cause huge slowdowns. This is actually fixed in default paper config, but
+older configs might not have it added, so make sure it's there.
+
+`paper-global.yml`
+```yaml
+packet-limiter:
+  overrides:
+    ServerboundPlaceRecipePacket:
+      action: DROP
+      interval: 4.0
+      max-packet-rate: 5.0
+```
+
 ### Treasure search
 
 When new treasure map is generated, usually via cartographer villager or opening a chest with treasure map in it, the