feat: Add docs for async logs

Author: as51340

pages/database-management/configuration.mdx

@@ -522,6 +522,7 @@ This section contains the list of all other relevant flags used within Memgraph.
 | `--isolation-level=SNAPSHOT_ISOLATION`          | Isolation level used for the transactions. Allowed values: SNAPSHOT_ISOLATION, READ_COMMITTED, READ_UNCOMMITTED.                                                                                                                                                                                                                                             | `[string]` |
 | `--log-file=/var/log/memgraph/memgraph.log`     | Path to where the log should be stored. If set to an empty string (`--log-file=`), no logs will be saved.                                                                                                                                                                                                                                                    | `[string]` |
 | `--log-level=WARNING`                           | Minimum log level. Allowed values: TRACE, DEBUG, INFO, WARNING, ERROR, CRITICAL.                                                                                                                                                                                                                                                                             | `[string]` |
+| `--logger-type=sync`                            | Type of logger used by Memgraph. Allowed values: `sync`, `async`. When set to `async`, log messages are buffered and written in a background thread, reducing the performance impact of logging on query execution.                                                                                                                                          | `[string]` |
 | `--memory-limit=0`                              | Total memory limit in MiB. Set to 0 to use the default values which are 100% of the physical memory if the swap is enabled and 90% of the physical memory otherwise.                                                                                                                                                                                         | `[uint64]` |
 | `--metrics-address`                             | Host for HTTP server for exposing metrics.                                                                                                                                                                                                                                                                                                                   | `[string]` |
 | `--metrics-port`                                | Port for HTTP server for exposing metrics.                                                                                                                                                                                                                                                                                                                   | `[uint64]` |

pages/database-management/logs.mdx

@@ -19,6 +19,12 @@ configuration flag or [during
 runtime](/database-management/configuration#change-configuration-settings-during-runtime) using the `SET
 DATABASE SETTING "log.level" TO "TRACE";`
 
+By default, Memgraph uses synchronous logging. To reduce the performance impact
+of logging on query execution, you can enable asynchronous logging by setting the
+[`--logger-type`](/database-management/configuration#other) configuration flag
+to `async`. With asynchronous logging, log messages are buffered and written in a
+background thread instead of blocking the executing thread.
+
 The configuration set during runtime will be applied only for that session.
 
 You can check the log level by running `SHOW DATABASE SETTING "log.level";` query.