if client == nil {
				return errPeerNotReachable
			}
			return client.LoadServiceAccount(accessKey)
		}, idx, *client.host)
	}
	return ng.Wait()
}

// BackgroundHealStatus - returns background heal status of all peers
func (sys *NotificationSys) BackgroundHealStatus() ([]madmin.BgHealState, []NotificationPeerErr) {
	ng := WithNPeers(len(sys.peerClients))
	states := make([]madmin.BgHealState, len(sys.peerClients))

!!! warning
    If you are just starting, the tutorial [SQL (Relational) Databases](../tutorial/sql-databases.md){.internal-link target=_blank} that uses SQLAlchemy should be enough.

    Feel free to skip this.

    Peewee is not recommended with FastAPI as it doesn't play well with anything async Python. There are several better alternatives.

!!! info
    These docs assume Pydantic v1.

Dans les versions précédentes de Javascript NodeJS / Navigateur, vous auriez utilisé des "callbacks". Menant potentiellement à ce que l'on appelle <a href="http://callbackhell.com/" class="external-link" target="_blank">le "callback hell"</a>.


## Coroutines

		return
	}

	// TODO: This causes allocations, but escape analysis doesn't really show the cause.
	// If another faithful engineer wants to take a stab, feel free.
	go func(m message) {
		var start time.Time
		if m.DeadlineMS > 0 {
			start = time.Now()
		}
		var b []byte
		var err *RemoteErr
		func() {
			defer func() {

* `^`: starts with the following characters, doesn't have characters before.
* `fixedquery`: has the exact value `fixedquery`.
* `$`: ends there, doesn't have any more characters after `fixedquery`.

If you feel lost with all these **"regular expression"** ideas, don't worry. They are a hard topic for many people. You can still do a lot of stuff without needing regular expressions yet.

   * ensure type safety. For best results, use the standard method-chaining idiom illustrated in the
   * class documentation above, configuring a builder and building your cache in a single statement.
   * Failure to heed this advice can result in a {@link ClassCastException} being thrown by a cache
   * operation at some <i>undefined</i> point in the future.
   *