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PgPubSubOptions
Options accepted as option argument of PgPubSub constructor.
It extends pg.ClientConfig options, mostly because it is used to
construct PostgreSQL database connection, adding more properties required
to configure PgBubSub objects behavior.
-
ClientConfig
↳ PgPubSubOptions
- acquireInterval
- connectionString
- database
- filtered
- host
- keepAlive
- keepAliveInitialDelayMillis
- password
- pgClient
- port
- query_timeout
- retryDelay
- retryLimit
- singleListener
- ssl
- statement_timeout
- stream
- user
• acquireInterval: number
Time interval in milliseconds before LISTEN clients would re-try to
acquire channel locks. It works from one hand as connection keep-alive
periodical pings, from other hand adds additional level of reliability
for the cases when connection, which holds the lock has been suddenly
disconnected in a silent manner.
By default is set to 30000ms (30sec). Please, assume this value
should be selected for a particular system with care of often acquire
lock hits and overall infrastructure reliability.
type {number}
• connectionString? : undefined | string
Inherited from void
• database? : undefined | string
Inherited from void
• filtered: boolean
If set to true, self emitted messages will be filtered on the connection. By default is false.
type {boolean}
• host? : undefined | string
Inherited from void
• keepAlive? : undefined | false | true
Inherited from void
• keepAliveInitialDelayMillis? : undefined | number
Inherited from void
• password? : undefined | string
Inherited from void
• pgClient? : Client
Existing PostgreSQL client connection (optional). Can be passed if
there is a need to re-use existing db connection from external code.
Otherwise it is required to bypass correct options to instantiate
new pg.Client connection properly.
type {Client}
• port? : undefined | number
Inherited from void
• query_timeout? : undefined | number
Inherited from void
• retryDelay: number
Specifies delay in milliseconds between re-connection retries
type {number}
• retryLimit: number
Specifies maximum number of re-connection retries to process, before connection would be treated as broken (disconnected). By default is set to infinite number of retries.
type {number}
• singleListener: boolean
Boolean flag, which turns off/on single listener mode. By default is set to true, so instantiated PgPubSub connections will act using inter-process locking mechanism.
type {boolean}
• ssl? : boolean | ConnectionOptions
Inherited from void
• statement_timeout? : false | number
Inherited from void
• stream? : stream.Duplex
Inherited from void
• user? : undefined | string
Inherited from void