}

func (ies *IAMEtcdStore) addUser(ctx context.Context, user string, userType IAMUserType, u UserIdentity, m map[string]UserIdentity) error {
	if u.Credentials.IsExpired() {
		// Delete expired identity.
		deleteKeyEtcd(ctx, ies.client, getUserIdentityPath(user, userType))
		deleteKeyEtcd(ctx, ies.client, getMappedPolicyPath(user, userType, false))
		return nil
	}
	if u.Credentials.AccessKey == "" {

	// Objects matching prefixes should not leave delete markers,
	// dramatically reduces namespace pollution while keeping the
	// benefits of replication, make sure to apply version suspension
	// only at bucket level instead.
	opts.VersionSuspended = globalBucketVersioningSys.Suspended(bucket)
	// For directory objects, delete `null` version permanently.
	if isDirObject(object) && opts.VersionID == "" {

        } else {
            try {
                final File propFile = ComponentUtil.getSystemHelper().createTempFile("thumbnail_", ".properties");
                if (propFile.delete() && logger.isDebugEnabled()) {
                    logger.debug("Deleted temp file: path={}", propFile.getAbsolutePath());
                }
                systemProperties.reload(propFile.getAbsolutePath());

        File file = artifact.getFile();

        File touchfile = getTouchfile(artifact);

        if (file.exists()) {
            trackingFileManager.delete(touchfile);
        } else {
            writeLastUpdated(touchfile, getRepositoryKey(repository), error);
        }
    }

    @Override

Beispielsweise haben sie kein `await file.read()` oder `async for chunk in file`.

Und in vielen Fällen wäre das Lesen eine blockierende Operation (die die Event-Loop blockieren könnte), weil von der Festplatte oder aus dem Netzwerk gelesen wird.

/// info | Info

Das obige Beispiel ist tatsächlich eine Ausnahme, weil sich das `io.BytesIO`-Objekt bereits im Speicher befindet, daher blockiert sein Lesen nichts.

package cmd

import (
	"context"
	"errors"
)

// errMaxVersionsExceeded return error beyond 10000 (default) versions per object
var errMaxVersionsExceeded = StorageErr("maximum versions exceeded, please delete few versions to proceed")

// errUnexpected - unexpected error, requires manual intervention.
var errUnexpected = StorageErr("unexpected error, please report this issue at https://github.com/minio/minio/issues")

import org.opensearch.action.bulk.BulkItemResponse;
import org.opensearch.action.bulk.BulkRequestBuilder;
import org.opensearch.action.bulk.BulkResponse;
import org.opensearch.action.delete.DeleteRequestBuilder;
import org.opensearch.action.delete.DeleteResponse;
import org.opensearch.action.index.IndexRequestBuilder;
import org.opensearch.action.index.IndexResponse;
import org.opensearch.action.search.SearchRequestBuilder;

    /** The key of the message: A crawler is running. You cannot delete documents. */
    public static final String ERRORS_cannot_delete_doc_because_of_running = "{errors.cannot_delete_doc_because_of_running}";

    /** The key of the message: Failed to delete a document. */
    public static final String ERRORS_failed_to_delete_doc_in_admin = "{errors.failed_to_delete_doc_in_admin}";

	if err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	writeSuccessResponseJSON(w, encryptedData)
}

// DeleteServiceAccount - DELETE /minio/admin/v3/delete-service-account
func (a adminAPIHandlers) DeleteServiceAccount(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	// Get current object layer instance.
	objectAPI := newObjectLayerFn()

        sb.append(dm).append(userInfoId);
        sb.append(dm).append(userSessionId);
        sb.append(dm).append(virtualHost);
        if (sb.length() > dm.length()) {
            sb.delete(0, dm.length());
        }
        sb.insert(0, "{").append("}");
        return sb.toString();
    }

    // ===================================================================================