3fc4e23a36
forward_service is nondescriptive and misnamed, as it does more than forward requests. It's a classic map/reduce algorithm (and in fact one of its parameters is "reducer"), so name it accordingly. The name "forward" leaked into the wire protocol for the messaging service RPC isolation cookie, so it's kept there. It's also maintained in the name of the logger (for "nodetool setlogginglevel") for compatibility with tests. Closes scylladb/scylladb#19444
1015 B
1015 B
ScyllaDB Module Index
Following is a rough diagram how the various modules in ScyllaDB interact.
classDiagram
class storage_proxy
class messaging_service
class database
class keyspace
class table
class cql
class cdc
class view
class alternator
class mapreduce_service
class storage_service
class gossiper
class db_config
class db_commitlog
storage_proxy ..> database : read/write
storage_proxy ..> messaging_service : rpc
storage_proxy ..> cdc : update
storage_proxy ..> gossiper: check node liveness
storage_proxy ..> view : update
cql ..> cdc : configure
cql ..> view : configure
alternator ..> cdc : configure
cql ..> mapreduce_service : data path for autopar aggregations
mapreduce_service ..> storage_proxy : read
mapreduce_service ..> messaging_service : rpc
cql ..> storage_proxy : data path
alternator ..> storage_proxy : data path
database --* db_commitlog : commit
cql ..> cdc : configure
alternator ..> cdc : configure
database --o keyspace
keyspace --o table