grain/app/static/examples/config.example.yml

mongodb:
  uri: mongodb://localhost:27017/
  database: grain

auth:
  enabled: false # Enable or disable AUTH handling
  relay_url: "wss://relay.example.com/" # Specify the relay URL

server:
  port: :8181
  read_timeout: 10 # in seconds
  write_timeout: 10 # in seconds
  idle_timeout: 120 # in seconds
  max_connections: 100
  max_subscriptions_per_client: 10

resource_limits:
  cpu_cores: 2 # Limit the number of CPU cores the application can use
  memory_mb: 1024 # Cap the maximum amount of RAM in MB the application can use
  heap_size_mb: 512 # Set a limit on the Go garbage collector's heap size in MB
  max_goroutines: 100 # Limit the maximum number of concurrently running Go routines

rate_limit:
  ws_limit: 100 # WebSocket messages per second
  ws_burst: 200 # Allowed burst of WebSocket messages
  event_limit: 50 # Events per second
  event_burst: 100 # Allowed burst of events
  req_limit: 50 # HTTP requests per second
  req_burst: 100 # Allowed burst of HTTP requests
  max_event_size: 51200 # Maximum size of an event in bytes

  # Size limits for specific event kinds
  kind_size_limits:
    - kind: 0
      max_size: 10240 # Maximum size in bytes for kind 0 events
    - kind: 1
      max_size: 25600 # Maximum size in bytes for kind 1 events

  # Rate limits for different event categories
  category_limits:
    ephemeral:
      limit: 100 # Events per second
      burst: 200 # Allowed burst
    parameterized_replaceable:
      limit: 5
      burst: 10
    regular:
      limit: 25
      burst: 50
    replaceable:
      limit: 10
      burst: 20

  # Rate limits for specific event kinds
  kind_limits:
    - kind: 0
      limit: 1 # Events per second
      burst: 5 # Allowed burst
    - kind: 1
      limit: 25
      burst: 50
    - kind: 3
      limit: 25
      burst: 50

pubkey_whitelist:
  enabled: false
  pubkeys: [] # List of allowed public keys
  npubs: [] # List of allowed npubs (Nostr public keys in bech32 format)

kind_whitelist:
  enabled: false
  kinds: [] # List of allowed event kinds

domain_whitelist:
  enabled: false
  domains: [] # List of allowed domains

blacklist: #Removing a pubkey from the Blacklist requires a hard restart; Blacklist overides the Whitelist
  enabled: true
  permanent_ban_words: [] # Words that trigger a permanent ban
  temp_ban_words: # Words that trigger a temporary ban
    - crypto
    - web3
    - airdrop
  max_temp_bans: 3 # Number of temporary bans before a permanent ban
  temp_ban_duration: 3600 # Temporary ban duration in seconds
  permanent_blacklist_pubkeys: # List of permanently banned public keys
    - db0c9b8acd6101adb9b281c5321f98f6eebb33c5719d230ed1870997538a9765
  permanent_blacklist_npubs: # List of permanently banned npubs
    - npub1x0r5gflnk2mn6h3c70nvnywpy2j46gzqwg6k7uw6fxswyz0md9qqnhshtn