| // |
| // ============LICENSE_START======================================================= |
| // Copyright (C) 2016-2018 Ericsson. All rights reserved. |
| // ================================================================================ |
| // This file is licensed under the CREATIVE COMMONS ATTRIBUTION 4.0 INTERNATIONAL LICENSE |
| // Full license text at https://creativecommons.org/licenses/by/4.0/legalcode |
| // |
| // SPDX-License-Identifier: CC-BY-4.0 |
| // ============LICENSE_END========================================================= |
| // |
| // @author Sven van der Meer (sven.van.der.meer@ericsson.com) |
| // |
| |
| == Flexible Clustering |
| |
| APEX can be clustered in various ways. |
| The following figure shows a few of these clustering options. |
| Cluster, engine and (policy) executors are named UPec (universal policy cluster), UPe (universal policy engine, APEX engine) and UPx (universal policy executor, the APEX internal state machine executor). |
| |
| .APEX Clustering Options |
| image::apex-intro/UpeeClusterOptions.png[APEX Clustering Options] |
| |
| [loweralpha] |
| . Single source/target, single UPx |
| * Simple forward |
| . Multiple sources/targets, single UPx |
| * Simple forward |
| . Single source/target, multiple UPx |
| * Multithreading (MT) in UPe |
| . Multiple sources/targets, multiple UPx instances |
| * Simple forward & MT in UPe |
| . Multiple non-MT UPe in UPec |
| * Simple event routing |
| . Multiple MT UPe in UPec |
| * Simple event routing |
| . Mixed UPe in UPec |
| * Simple event routing |
| . Multiple non-MT UPec in UPec |
| * Intelligent event routing |
| . Multiple mixed UPec in UPec |
| * Intelligent event routing |
| |
| ["loweralpha", start=11] |
| . Mix of UPec in multiple UPec |
| * External intelligent event routing |
| * Optimized with UPec internal routing |