| Name | Description | Default value |
| dbalias | Name of the database in secdist config (if available). | – |
| name_alias | Name alias to use in dynamic configs. | name of the component |
| dbconnection | Connection DSN string (used if no dbalias specified). | – |
| blocking_task_processor | Name of task processor for background blocking operations. | engine::current_task::GetBlockingTaskProcessor() |
| max_replication_lag | Replication lag limit for usable replicas. If a replica's lag exceeds this value, it stops receiving new requests. | 60s |
| min_pool_size | Number of connections created initially by this component instance to each of the provided PostgreSQL hosts. Connections are kept even without requests. | 4 |
| max_pool_size | Maximum number of connections that can be created by this component instance to each of the provided PostgreSQL hosts for "connlimit_mode: manual". Should not be less than min_pool_size. | 15 |
| sync-start | Perform initial connections synchronously. | true |
| dns_resolver | Server hostname resolver type (getaddrinfo or async). Possible values: getaddrinfo, async. | async |
| persistent-prepared-statements | Cache prepared statements or not. | true |
| statement-log-mode | Whether to log SQL statements in a span tag. Possible values: hide, show. | show |
| user-types-enabled | Disabling will disallow use of user-defined types. | true |
| check-user-types | Cancel service start if some user types have not been loaded, which helps to detect missing migrations. | false |
| ignore_unused_query_params | Disable check for not-NULL query params that are not used in query. | false |
| max-ttl-sec | The maximum lifetime for connections. | – |
| discard-all-on-connect | Execute discard all on new connections. | true |
| deadline-propagation-enabled | Whether statement timeout is affected by deadline propagation. | true |
| monitoring-dbalias | Name of the database for monitorings. | calculated from dbalias or dbconnection options |
| max_prepared_cache_size | Prepared statements cache size limit. | 200 |
| max_statement_metrics | Limit of exported metrics for named statements. | 0 |
| error-injection | Error-injection options. | – |
| error-injection.enabled | Enable error injection. | false |
| error-injection.probability | Thrown exception probability. | 0 |
| error-injection.verdicts.[] | Possible injection verdicts. Each of the elements: what error injection hook may decide to do. | empty |
| max_queue_size | Maximum number of clients waiting for a connection. storages::postgres::PoolError is thrown if a new request exceeds this limit. | 200 |
| pipeline_enabled | Turns on pipeline connection mode. | false |
| connecting_limit | Limit for concurrent establishing connections number per PostgreSQL host (0 - unlimited). | 0 |
| connlimit_mode | How to learn the max_pool_size. Possible values: auto, manual. | – |
