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fix(mem0-ts): support pgvector connection strings and ssl (#5789)

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This commit is contained in:
Rod Boev
2026-06-25 11:57:37 +05:30
committed by GitHub
parent ac296f7534
commit 6bb1d328ad
5 changed files with 279 additions and 121 deletions
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docs/components/vectordbs/dbs/pgvector.mdx
+50 -45
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@@ -2,6 +2,7 @@
title: "pgvector"
description: "Use pgvector as a vector store in Mem0 for PostgreSQL-based vector similarity search with open-source simplicity."
---
[pgvector](https://github.com/pgvector/pgvector) is an open-source vector similarity search extension for Postgres. After connecting to Postgres, run `CREATE EXTENSION IF NOT EXISTS vector;` to create the vector extension.
### Usage
@@ -14,41 +15,38 @@ from mem0 import Memory
os.environ["OPENAI_API_KEY"] = "sk-xx"
config = {
"vector_store": {
"provider": "pgvector",
"config": {
"user": "test",
"password": "123",
"host": "127.0.0.1",
"port": "5432",
}
}
"vector_store": {
"provider": "pgvector",
"config": {
"user": "test",
"password": "123",
"host": "127.0.0.1",
"port": "5432",
},
}
}
m = Memory.from_config(config)
messages = [
{"role": "user", "content": "I'm planning to watch a movie tonight. Any recommendations?"},
{"role": "assistant", "content": "How about thriller movies? They can be quite engaging."},
{"role": "user", "content": "I'm not a big fan of thriller movies but I love sci-fi movies."},
{"role": "assistant", "content": "Got it! I'll avoid thriller recommendations and suggest sci-fi movies in the future."}
{"role": "user", "content": "I'm planning to watch a movie tonight. Any recommendations?"},
{"role": "assistant", "content": "How about thriller movies? They can be quite engaging."},
{"role": "user", "content": "I'm not a big fan of thriller movies but I love sci-fi movies."},
{"role": "assistant", "content": "Got it! I'll avoid thriller recommendations and suggest sci-fi movies in the future."},
]
m.add(messages, user_id="alice", metadata={"category": "movies"})
```
````
```typescript TypeScript
import { Memory } from 'mem0ai/oss';
import { Memory } from "mem0ai/oss";
const config = {
vectorStore: {
provider: 'pgvector',
provider: "pgvector",
config: {
collectionName: 'memories',
collectionName: "memories",
embeddingModelDims: 1536,
user: 'test',
password: '123',
host: '127.0.0.1',
port: 5432,
dbname: 'vector_store', // Optional; TypeScript OSS defaults to `vector_store` when omitted
connectionString: "postgresql://test:123@localhost:5432/vector_store",
diskann: false, // Optional, requires pgvectorscale extension
hnsw: false, // Optional, for HNSW indexing
},
@@ -57,37 +55,44 @@ const config = {
const memory = new Memory(config);
const messages = [
{"role": "user", "content": "I'm planning to watch a movie tonight. Any recommendations?"},
{"role": "assistant", "content": "How about thriller movies? They can be quite engaging."},
{"role": "user", "content": "I'm not a big fan of thriller movies but I love sci-fi movies."},
{"role": "assistant", "content": "Got it! I'll avoid thriller recommendations and suggest sci-fi movies in the future."}
]
{ role: "user", content: "I'm planning to watch a movie tonight. Any recommendations?" },
{ role: "assistant", content: "How about thriller movies? They can be quite engaging." },
{ role: "user", content: "I'm not a big fan of thriller movies but I love sci-fi movies." },
{ role: "assistant", content: "Got it! I'll avoid thriller recommendations and suggest sci-fi movies in the future." },
];
await memory.add(messages, { userId: "alice", metadata: { category: "movies" } });
```
````
</CodeGroup>
### Config
Here are the parameters available for configuring pgvector:
| Parameter | Description | Default Value |
| --- | --- | --- |
| `dbname` | The name of the database | `postgres` |
| `collection_name` | The name of the collection | `mem0` |
| `embedding_model_dims` | Dimensions of the embedding model | `1536` |
| `user` | User name to connect to the database | `None` |
| `password` | Password to connect to the database | `None` |
| `host` | The host where the Postgres server is running | `None` |
| `port` | The port where the Postgres server is running | `None` |
| `diskann` | Whether to use diskann for vector similarity search (requires pgvectorscale) | `True` |
| `hnsw` | Whether to use hnsw for vector similarity search | `False` |
| `sslmode` | SSL mode for PostgreSQL connection (e.g., 'require', 'prefer', 'disable') | `None` |
| `connection_string` | PostgreSQL connection string (overrides individual connection parameters) | `None` |
| `connection_pool` | psycopg2 connection pool object (overrides connection string and individual parameters) | `None` |
| Parameter | SDK | Description | Default Value |
| -------------------- | ----------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------- |
| `connectionString` | TypeScript OSS | PostgreSQL connection string for direct connections. When set, Mem0 connects to the target database directly and skips the bootstrap `postgres` database flow. | `None` |
| `ssl` | TypeScript OSS | SSL option passed directly to `pg`, either `true` or an SSL config object, for both `connectionString` and split-field connections. | `None` |
| `dbname` | TypeScript OSS | Split-field database name. This is only used when `connectionString` is absent. | `vector_store` |
| `collectionName` | TypeScript OSS | Collection name. | `memories` |
| `embeddingModelDims` | TypeScript OSS | Dimensions of the embedding model. | Required |
| `user` | TypeScript OSS + Python | Database user for split-field connections. | `None` |
| `password` | TypeScript OSS + Python | Database password for split-field connections. | `None` |
| `host` | TypeScript OSS + Python | Database host for split-field connections. | `None` |
| `port` | TypeScript OSS + Python | Database port for split-field connections. | `None` |
| `diskann` | TypeScript OSS + Python | Whether to use DiskANN for vector similarity search, requires pgvectorscale. | `False` |
| `hnsw` | TypeScript OSS + Python | Whether to use HNSW for vector similarity search. | TypeScript OSS: `False`, Python: `True` |
| `connection_string` | Python only | PostgreSQL connection string, overrides individual connection parameters. | `None` |
| `sslmode` | Python only | SSL mode for PostgreSQL connections, such as `require`, `prefer`, or `disable`. | `None` |
| `connection_pool` | Python only | psycopg connection pool object, overrides connection string and individual connection parameters. | `None` |
**Note (TypeScript OSS):** If you omit `dbname`, the TypeScript client uses the database name `vector_store`. Python defaults to `postgres` for `dbname`, as in the table above.
**TypeScript OSS:** Use `connectionString` plus optional `ssl` for managed Postgres setups. If you omit `connectionString`, Mem0 falls back to split fields and uses `dbname`, `user`, `password`, `host`, `port`, and optional `ssl`.
**Python:** The Python SDK uses snake_case keys such as `connection_string`, `sslmode`, `collection_name`, and `embedding_model_dims`.
**Python connection priority**:
**Note**: The connection parameters have the following priority:
1. `connection_pool` (highest priority)
2. `connection_string`
3. Individual connection parameters (`user`, `password`, `host`, `port`, `sslmode`)
3. Individual connection parameters (`user`, `password`, `host`, `port`, `sslmode`)