# Optimization
This page will show you how to optimize the script, following all the instructions will improve the script performance
## Item check
Use these **server-side** events right after any item addition/removal, they can be used anywhere (if you replace the parameters with the proper ones)
```lua
TriggerEvent("framework:onItemAdded", playerId, itemName, itemCount)
```
```lua
TriggerEvent("framework:onItemRemoved", playerId, itemName, itemCount)
```
### Examples
Note: if you use something that is not listed in the examples, editing it is down to you, the events listed above works anywhere if used properly
#### ESX
**Note: default ESX already has `esx:onAddInventoryItem` and `esx:onRemoveInventoryItem` which will allow you to not add anything, so follow the example only if you don't have those events for any reason**
Go in `es_extended/server/classes/player.lua` and add the following codes
#### OX Inventory (ESX)
Go in `es_extended/server/classes/overrides/oxinventory.lua` and add the following codes
#### QBCore (latest version)
Go in `qb-inventory/server/main.lua` and add the following codes
##
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