I've created a custom cookie via Javascript and every time I logout, I want to remove this cookie from the browser. How/Where is the best place to perform this operation in the Hybris/Sap Commerce ecosystem?
You can use Spring MVC Interceptors like this.
<alias name="defaultBeforeControllerHandlersList" alias="beforeControllerHandlersList"/>
<util:list id="defaultBeforeControllerHandlersList">
<!-- List of handlers to run -->
<bean class="xyz.CheckUrlsBeforeControllerHandler">
<property name="checkedUrls" ref="checkUrlsList"/>
</bean>
</util:list>
Then Inside CustomHandler use guidCookieStrategy.deleteCookie(request, response); to delete cookies.