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fix: change message indexes to sort created_at descending #147

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fix: change message indexes to sort created_at descending #147

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fed71b2
Update task_message_repository.py
smoreinis Feb 9, 2026
9dd7b45
Remove redundant MongoDB indexes and enforce unique constraint on tas…
smoreinis Feb 9, 2026
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12 changes: 5 additions & 7 deletions agentex/src/domain/repositories/task_message_repository.py
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Original file line number Diff line number Diff line change
Expand Up @@ -19,15 +19,13 @@ class TaskMessageRepository(MongoDBCRUDRepository[TaskMessageEntity]):
# These will be created once at startup, not per request
INDEXES = [
{
"keys": [("task_id", pymongo.ASCENDING), ("created_at", pymongo.ASCENDING)],
"keys": [
("task_id", pymongo.ASCENDING),
("created_at", pymongo.DESCENDING),
],
"name": "task_id_created_at_idx",
"description": "Compound index for querying messages by task_id and sorting by created_at",
},
{
"keys": [("task_id", pymongo.ASCENDING)],
"name": "task_id_idx",
"description": "Single index for task_id queries and delete operations",
},
{
"keys": [
("task_id", pymongo.ASCENDING),
Expand All @@ -40,7 +38,7 @@ class TaskMessageRepository(MongoDBCRUDRepository[TaskMessageEntity]):
"keys": [
("task_id", pymongo.ASCENDING),
("content.type", pymongo.ASCENDING),
("created_at", pymongo.ASCENDING),
("created_at", pymongo.DESCENDING),
],
"name": "task_id_content_type_created_at_idx",
"description": "Compound index for filtering messages by task_id, content type, and sorting by created_at",
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8 changes: 2 additions & 6 deletions agentex/src/domain/repositories/task_state_repository.py
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Expand Up @@ -21,12 +21,8 @@ class TaskStateRepository(MongoDBCRUDRepository[StateEntity]):
{
"keys": [("task_id", pymongo.ASCENDING), ("agent_id", pymongo.ASCENDING)],
"name": "task_agent_compound_idx",
"description": "Compound index for get_by_task_and_agent queries",
},
{
"keys": [("task_id", pymongo.ASCENDING)],
"name": "task_id_idx",
"description": "Single index for task_id queries",
"unique": True,
"description": "Unique compound index for get_by_task_and_agent queries",
},
{
"keys": [("agent_id", pymongo.ASCENDING)],
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