diff --git a/CMakeLists.txt b/CMakeLists.txt
index d48b805..ea8b9e8 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -337,6 +337,16 @@ add_test(NAME amduatd_graph_contract
 )
 set_tests_properties(amduatd_graph_contract PROPERTIES SKIP_RETURN_CODE 77)
 
+add_test(NAME amduatd_graph_index_append
+  COMMAND bash ${CMAKE_CURRENT_SOURCE_DIR}/scripts/test_graph_index_append.sh
+)
+set_tests_properties(amduatd_graph_index_append PROPERTIES SKIP_RETURN_CODE 77)
+
+add_test(NAME amduatd_graph_index_append_stress
+  COMMAND bash ${CMAKE_CURRENT_SOURCE_DIR}/scripts/test_graph_index_append_stress.sh
+)
+set_tests_properties(amduatd_graph_index_append_stress PROPERTIES SKIP_RETURN_CODE 77)
+
 add_executable(amduatd_test_space_doctor
   tests/test_amduatd_space_doctor.c
   src/amduatd_space_doctor.c
diff --git a/src/amduatd_concepts.c b/src/amduatd_concepts.c
index bdf0cab..b03178b 100644
--- a/src/amduatd_concepts.c
+++ b/src/amduatd_concepts.c
@@ -47,6 +47,8 @@ static const char *const AMDUATD_EDGE_COLLECTION = "daemon/edges";
 static const uint32_t AMDUATD_EDGE_VIEW_BATCH = 1024u;
 static const uint32_t AMDUATD_EDGE_REFRESH_BATCH = 512u;
 static const uint16_t AMDUATD_EDGE_COLLECTION_KIND = 1u;
+static const uint32_t AMDUATD_EDGE_APPEND_MAX_ATTEMPTS = 6u;
+static const useconds_t AMDUATD_EDGE_APPEND_RETRY_US = 2000u;
 
 static bool amduatd_relation_entry_ref(const amduatd_concepts_t *concepts,
                                        const char *rel_name,
@@ -1930,14 +1932,31 @@ static bool amduatd_concepts_append_edge_record(amduatd_concepts_t *c,
   }
   free((void *)payload.data);
   {
-    amduat_asl_collection_error_t append_err =
-        amduat_asl_collection_append(&c->edge_collection,
-                                     c->edge_collection_name,
-                                     record_ref,
-                                     AMDUATD_EDGE_COLLECTION_KIND,
-                                     actor,
-                                     &offset);
+    amduat_asl_collection_error_t append_err = AMDUAT_ASL_COLLECTION_ERR_IO;
+    uint32_t attempt = 0u;
+    for (attempt = 0u; attempt < AMDUATD_EDGE_APPEND_MAX_ATTEMPTS; ++attempt) {
+      append_err = amduat_asl_collection_append(&c->edge_collection,
+                                                c->edge_collection_name,
+                                                record_ref,
+                                                AMDUATD_EDGE_COLLECTION_KIND,
+                                                actor,
+                                                &offset);
+      if (append_err == AMDUAT_ASL_COLLECTION_OK) {
+        break;
+      }
+      if (append_err != AMDUAT_ASL_COLLECTION_ERR_IO ||
+          attempt + 1u >= AMDUATD_EDGE_APPEND_MAX_ATTEMPTS) {
+        break;
+      }
+      usleep(AMDUATD_EDGE_APPEND_RETRY_US);
+    }
     if (append_err != AMDUAT_ASL_COLLECTION_OK) {
+      amduat_log(AMDUAT_LOG_ERROR,
+                 "edge append context: root=%s pointer_root=%s collection=%s attempts=%u",
+                 c->root_path != NULL ? c->root_path : "?",
+                 c->edge_collection.pointer_store.root_path,
+                 c->edge_collection_name != NULL ? c->edge_collection_name : "?",
+                 (unsigned)(attempt + 1u));
       if (c->edge_collection_name != NULL &&
           !amduat_asl_pointer_name_is_valid(c->edge_collection_name)) {
         amduat_log(AMDUAT_LOG_ERROR, "edge collection name invalid: %s",
@@ -1995,10 +2014,11 @@ static bool amduatd_concepts_append_edge_record(amduatd_concepts_t *c,
           free(log_name);
         }
       }
-      amduat_log(AMDUAT_LOG_ERROR, "edge append failed for %s (err=%d)",
+      amduat_log(AMDUAT_LOG_ERROR, "edge append failed for %s (err=%d attempts=%u)",
                  c->edge_collection_name != NULL ? c->edge_collection_name
                                                  : "?",
-                 (int)append_err);
+                 (int)append_err,
+                 (unsigned)(attempt + 1u));
       amduat_reference_free(&record_ref);
       return false;
     }