cevabı buldu benim gibi sorun yasayan arkadaşlar için paylaşıyorum
<caching>
<profiles>
<add extension=".png" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client"/>
<add extension=".jpeg" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client"/>
<add extension=".jpg" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client"/>
<add extension=".css" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client"/>
<add extension=".js" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client"/>
<add extension=".webp" policy="CacheUntilChange" varyByHeaders="User-Agent" location="Client"/>
</profiles>
</caching>


<staticContent>
<!-- Set expire headers to 30 days for static content-->
<clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="30.00:00:00" />
</staticContent>