shreemaan-abhishek commented on issue #9750:
URL: https://github.com/apache/apisix/issues/9750#issuecomment-1614414952
> I reported this on Slack and they told me it wasn't an expected behaviour
Hi, I think there has been a miscommunication, I said that the variable not
being cleared at the end of the request is not expected behavior. Like the
document says, the custom variable is indeed global.
The problem is in your code:
```lua
local function retrieve_info(conf,ctx,etcd,plugin_name)
local cached_api_endpoint_info = ctx.var.cb_api_endpoint_info -- [1]
if cached_api_endpoint_info then
return cached_api_endpoint_info -- [2]
end
local key = ctx.var.uri -- [3]
core.ctx.register_var("cb_api_endpoint_info", function(ctx)
return key
end)
return key
end
```
When you try to access the variable [1], it gets you the value from the
previous request when it was set in [3]. On subsequent requests, the variable
`key` is not updated because the cached value is returned in [2] ( [3] never
gets executed again).
If you add logs to the official code to see how many times the cache is hit
and how many times you will see the feature working as expected.
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