Here is the layman understanding
Cluster -> network of nodes
nodes -> Physical or virtual instances on a single hardware boxes.
Essentially which means you can have more than 1 node on a same physical
box . which means more than one node can have same IP address but MUST have
different port.
Now this solves the general understanding of cluster/nodes in a typical web
app scale.
Does akka follow same convention ?. Question is when you specify following
application.conf for seed nodes
seed-nodes = [
"akka.tcp://[email protected]:2551",
"akka.tcp://[email protected]:2552"]
which means it starts 2 nodes , adds it to the cluster. Now the question is
if have bunch of actors, do they get created for each of the nodes? e.g if
have created 4 actors as a part of the process, will I have 8 actors of
type 4 in each nodes ?. is that a right assumption ?
Next question is routers and routees
As I understand each of these actors can be a router . ACTOR > Router and
router can create child actors a.k.a routees. So lets say if I use above
example out of 4 , I make 2 actors as routers (not sure how to make them
router) and each router creates 4 more child actors (routees) . Which means
in my cluster I will have
Node1 - 4 actors ; 2 routers , 2 regular actors
> 2 router creates > 4 child actors (routees ) each. -> Node1
total actors : 8
Node2- 4 actors ; 2 routers , 2 regular actors
> 2 router creates > 4 child actors (routees ) each. -> Node1
total actors : 8
So total actors in a given cluster 16 . is that a right assumption or
calculation.?
In short Cluster -> (1-n) Nodes (physical or virtual ) -> (1-1) Routers ->
(1-n) Routees
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