diff --git a/w11-eda/11-eda.html b/w11-eda/11-eda.html
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+++ b/w11-eda/11-eda.html
@@ -28,6 +28,10 @@
             width: 30%;
             vertical-align: middle;
         }
+        p img.logo-1 {
+            width: 60%;
+            vertical-align: middle;
+        }
     </style>
 </head>
 
@@ -111,7 +115,7 @@
 
                 ---
 
-                ### 🧭 patterns et cas d'usage courants
+                ### 🧭 cas d'usage courants
 
                 * 🛒 e-commerce : gestion des commandes, mises à jour de stock
                 * 🌡️ IoT : traitement de données de capteurs
@@ -119,6 +123,73 @@
                 * 🍡 Micro-services : communication asynchrones
                 * 🗄️ CDC : Change-Data-Capture : capture des changement d'une base de données
 
+                ---
+
+                ### Patterns
+
+                #### [Event Sourcing](https://martinfowler.com/eaaDev/EventSourcing.html)
+
+                ![](./images/es-1.gif) <!-- .element: class="logo" -->
+                ![](./images/es-2.gif) <!-- .element: class="logo" -->
+
+                * liste des évènements
+                * possibilité de reconstruire entièrement l'état de l'application
+                * rejeu d'évènements
+
+                ---
+
+                ### Patterns
+
+                #### [CQRS](https://martinfowler.com/bliki/CQRS.html)
+
+                ![](./images/cqrs.png) <!-- .element: class="logo-1" -->
+
+                * séparation des _Query_ (lecture) et des _Command_ (écriture)
+                * L'EDA implémente souvent la partie _Command_
+                * ⚠️ Consistence des données
+
+                ---
+
+                #### 🛣️ Road to CQRS (1/3)
+
+                ![](./images/cqrs-1.png)
+
+                ---
+
+                #### 🛣️ Road to CQRS (2/3)
+
+                ![](./images/cqrs-2.png)
+
+                ---
+
+                #### 🛣️ Road to CQRS (3/3)
+
+                ![](./images/cqrs-3.png)
+
+                ---
+
+                #### [Outbox](https://microservices.io/patterns/data/transactional-outbox.html)
+
+                rend l'écriture des messages (évènements) transactionnelle
+
+                ![](./images/outbox.png)
+
+                ---
+
+                #### [CDC](https://sudohainguyen.github.io/2023-11-20-change-data-capture/) : Change-Data-Capture
+
+                synchroniser des systèmes, intégrer de l'EDA dans du legacy
+
+                ![](./images/cdc.png)
+
+                (Kafka Connect / Debezium)
+
+                ---
+
+                #### [Event types](https://eda-visuals.boyney.io/visuals/event-types)
+
+                ![](./images/event-types.png)
+
             </textarea>
         </section>
 
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