# SEARCH.ALIASADD

> Create or update a search index alias.

Use `SEARCH.ALIASADD` to create an alias or update an existing alias to point to a search index.

An alias is a stable name that queries can use in place of a real index name, so the index behind it can be replaced without touching application code. Pointing an existing alias at a different index is atomic, which is what makes zero-downtime reindexing possible: build the new index under a fresh name, then move the alias to it in one step.

See [Aliases](/redis/search/aliases#adding-an-alias) for feature examples, including zero-downtime index swaps.

The target name is not required to exist when the alias is created, so aliases can temporarily be dangling. Most commands resolve aliases, but [`SEARCH.DROP`](/redis/commands/search/search-drop) always uses a literal index name.

## Syntax

```redis
SEARCH.ALIASADD <alias> <index_name>
```

## Response

Returns `1` if a new alias was created or `2` if an existing alias was updated, including when it already points to the supplied index.

## Examples

<AccordionGroup>

<Accordion title="Redis CLI" icon="terminal">

```bash
SEARCH.ALIASADD products products-v2
```

</Accordion>

<Accordion title="@upstash/redis" icon="node-js" iconType="brands">

```ts
import { Redis } from "@upstash/redis";

const redis = Redis.fromEnv();
const result = await redis.search.alias.add({
  alias: "products",
  indexName: "products-v2",
});
```

</Accordion>

<Accordion title="upstash_redis" icon="python" iconType="brands">

```python
from upstash_redis import Redis

redis = Redis.from_env()
result = redis.search.alias.add(
    alias="products",
    index_name="products-v2",
)
```

</Accordion>

<Accordion title="ioredis" icon="node-js" iconType="brands">

```ts
import IORedis from "ioredis";
import { createSearch } from "@upstash/search-ioredis";

const redis = new IORedis(process.env.REDIS_URL!);
const search = createSearch(redis);
const result = await search.alias.add({
  alias: "products",
  indexName: "products-v2",
});
```

</Accordion>

<Accordion title="node-redis" icon="node-js" iconType="brands">

```ts
import { createClient } from "redis";
import { createSearch } from "@upstash/search-redis";

const client = await createClient({ url: process.env.REDIS_URL })
  .on("error", console.error)
  .connect();
const search = createSearch(client);
const result = await search.alias.add({
  alias: "products",
  indexName: "products-v2",
});
```

</Accordion>

<Accordion title="curl">

```bash
curl -X POST https://YOUR_ENDPOINT.upstash.io \
  -H "Authorization: Bearer $UPSTASH_REDIS_REST_TOKEN" \
  -d '["SEARCH.ALIASADD", "products", "products-v2"]'
```

</Accordion>

</AccordionGroup>