Tarantool Cartridge / Table of contents / Module cartridge.pool
Tarantool Cartridge / Table of contents / Module cartridge.pool

Module cartridge.pool

Module cartridge.pool

Connection pool.

Reuse tarantool net.box connections with ease.


connect (uri[, opts])

Connect a remote or get cached connection. Connection is established using net.box.connect() .


  • uri: (string)
  • opts:
    • wait_connected: (boolean or number) by default, connection creation is blocked until theconnection is established, but passing wait_connected=false makes it return immediately. Also, passing a timeout makes itwait before returning (e.g. wait_connected=1.5 makes it waitat most 1.5 seconds).
    • connect_timeout: (optional number) (deprecated)Use wait_connected instead
    • user: (deprecated) don’t use it
    • password: (deprecated) don’t use it
    • reconnect_after: (deprecated) don’t use it


net.box connection



(table) Error description

Local Functions

format_uri (uri)

Enrich URI with credentials. Suitable to connect other cluster instances.



(string) username:password@host:port

map_call (fn_name[, args[, opts]])

Perform a remote call to multiple URIs and map results.

(Added in v1.2.0-17)


  • fn_name: (string)
  • args: (table) function arguments (optional)
  • opts:
    • uri_list: ({string,…}) array of URIs for performing remote call
    • timeout: (optional number) passed to net.box conn:call()


({URI=value,…}) Call results mapping for every URI.

(table) United error object, gathering errors for every URI that failed.