Delete key from every node
Nerdyvedi opened this issue · 9 comments
Hi, I am trying to ensure there's 0 possibility of having stale data with a particular key.
I am trying to solve this problem for the following scenario:
- key1 is mapped to Node 1.
- I delete key1 as it's now stale
- Node 1 goes down
- key1 is set again with new value, This time on Node 2(as Node 1 is down)
- Node is back up
- I want to delete key1, but don't have anything to delete on Node 1.
Now, if Node 1 goes down again, there is a possibility that I return data from Node 2 , which is stale.
Hi @Nerdyvedi, if you think this is a bug in pymemcache mind sharing the steps to reproduce the issue?
@jogo , Don't think it's a bug. I want to know if there's a feature that could allow me to delete key from a specific server?
@jogo , Don't think it's a bug. I want to know if there's a feature that could allow me to delete key from a specific server?
got it, it depends on which specific client you are using. For the HashClient you can find all the individual clients in self.clients
And let's say I want to delete a key from each server, I'll iterate through each client and call delete ?
@jogo At this moment thr _run_cmd function takes in the cmd and the key.
It then find the client from the key, and then runs the command.
There is no public function I can access that would allow me to delete key from specific client
Do you think it makes sense to create a function something like delete_from_client, and pass in the client we want to delete the key from?
can you just do something like?
for client in my_hash_client.clients:
client.delete(...)Got it, Thanks. Client has a delete function itself.