Currently we use a single topic for discovery.
This provides the best obscurity at the cost of bandwidth, as a message
sent on the discovery topic will be received by any peer.
This PR changes this behavior and start listening on a partitioned
topic.
Each pk will be hashed to a limited number of topics.
Everytime someone is in a conversation with someone from another topic
they will have to listen as well to avoid loosing obscurity, because we
only forward messages that we also advertise in the bloom filter.
The choice for the number of partitions depends on 2 factors:
1) The expected number of users using the network
2) The average number of contacts each user
Any change to the discovery topic will need to be split across 3
releases, to avoid breaking compatibility:
1) Listen to the new and old topic, publish to the old topic
2) Listen to the new and old topic, publish to the new topic
3) Listen to the new topic, publish to the new topic
This is step 1.
- aliased namespace keywords are used for local subs used for caching
- synthetic :chat namespace is used for subs used elsewhere
Signed-off-by: yenda <eric@status.im>
functions defined in subs need to be reusable and testable independently
from re-frame framework. they are moved into db namespace for that purpose
Signed-off-by: yenda <eric@status.im>
The initial purpose of the allowed keys macro was to only accept maps
with a defined set of keys so that the maps can be serialized into the db.
The way maps are serialized has been changed so that only the existing keys
in the db are cherry picked so passing maps with extra keys is no longer a
problem
