# TS.MADD

```json metadata
{
  "title": "TS.MADD",
  "description": "Append new samples to one or more time series",
  "categories": ["docs","develop","stack","oss","rs","rc","oss","kubernetes","clients"],
  "arguments": [{"arguments":[{"name":"key","type":"key"},{"name":"timestamp","type":"string"},{"name":"value","type":"double"}],"multiple":true,"name":"ktv","type":"block"}],
  "syntax_fmt": "TS.MADD key timestamp value [key timestamp value ...]",
  "complexity": "O(N*M) when N is the amount of series updated and M is the amount of compaction rules or O(N) with no compaction",
  "group": "timeseries",
  "acl_categories": ["@timeseries","@write","@slow"],
  "since": "1.0.0",
  "tableOfContents": {"sections":[{"id":"required-arguments","title":"Required arguments"},{"id":"complexity","title":"Complexity"},{"id":"examples","title":"Examples"},{"id":"redis-enterprise-and-redis-cloud-compatibility","title":"Redis Enterprise and Redis Cloud compatibility"},{"id":"return-information","title":"Return information"},{"id":"see-also","title":"See also"},{"id":"related-topics","title":"Related topics"}]}
}
```














Append new samples to one or more time series

[Examples](#examples)

## Required arguments

<details open>
<summary><code>key</code></summary> 

is the key name for the time series.
</details>

<details open>
<summary><code>timestamp</code></summary>

is Unix time (integer, in milliseconds) specifying the sample timestamp or `*` to set the sample timestamp to the Unix time of the server's clock.

Unix time is the number of milliseconds that have elapsed since 00:00:00 UTC on 1 January 1970, the Unix epoch, without adjustments made due to leap seconds.
</details>

<details open>
<summary><code>value</code></summary>

is numeric data value of the sample (double). The double number should follow <a href="https://tools.ietf.org/html/rfc7159">RFC 7159</a> (a JSON standard). The parser rejects overly large values that would not fit in binary64. It does not accept NaN or infinite values.
</details>

<note><b>Notes:</b>
- If `timestamp` is older than the retention period compared to the maximum existing timestamp, the sample is discarded and an error is returned.
- Explicitly adding samples to a compacted time series (using [`TS.ADD`](https://redis.io/docs/latestcommands/ts.add/), `TS.MADD`, [`TS.INCRBY`](https://redis.io/docs/latestcommands/ts.incrby/), or [`TS.DECRBY`](https://redis.io/docs/latestcommands/ts.decrby/)) may result in inconsistencies between the raw and the compacted data. The compaction process may override such samples.
- `ignoreMaxTimeDiff` and `ignoreMaxValDiff` cannot be specified as is the case with `TS.ADD`. However, the same logic still applies based on the values of the per-key configuration parameters. See the [`TS.ADD`](https://redis.io/docs/latestcommands/ts.add/) command page for more information.
</note>

## Complexity

If a compaction rule exits on a time series, TS.MADD performance might be reduced.
The complexity of TS.MADD is always `O(N*M)`, where `N` is the amount of series updated and `M` is the number of compaction rules or `O(N)` with no compaction.

## Examples

<details open>
<summary><b>Add stock prices at different timestamps</b></summary>

Create two stocks and add their prices at three different timestamps.


127.0.0.1:6379> TS.CREATE stock:A LABELS type stock name A
OK
127.0.0.1:6379> TS.CREATE stock:B LABELS type stock name B
OK
127.0.0.1:6379> TS.MADD stock:A 1000 100 stock:A 1010 110 stock:A 1020 120 stock:B 1000 120 stock:B 1010 110 stock:B 1020 100
1) (integer) 1000
2) (integer) 1010
3) (integer) 1020
4) (integer) 1000
5) (integer) 1010
6) (integer) 1020

</details>

## Redis Enterprise and Redis Cloud compatibility

| Redis<br />Enterprise | Redis<br />Cloud | <span style="min-width: 9em; display: table-cell">Notes</span> |
|:----------------------|:-----------------|:------|
| <span title="Supported">&#x2705; Supported</span><br /> | <span title="Supported">&#x2705; Flexible & Annual</span><br /><span title="Supported">&#x2705; Free & Fixed</nobr></span> |  |

## Return information

{{< multitabs id="ts-madd-return-info"
    tab1="RESP2"
    tab2="RESP3" >}}

One of the following:
* [Array reply](https://redis.io/docs/latest/develop/reference/protocol-spec#arrays), where each element is an [Integer reply](https://redis.io/docs/latest/develop/reference/protocol-spec#integers) representing the timestamp of a upserted sample. For each element that is ignored (see `IGNORE` in [`TS.CREATE`](https://redis.io/docs/latestcommands/ts.create/)), the reply element value will be the largest timestamp in the time series.
* [Simple error reply](https://redis.io/docs/latest/develop/reference/protocol-spec#simple-errors) in these cases: invalid arguments, wrong key type, duplication policy is `BLOCK`, or when `timestamp` is older than the retention period compared to the maximum existing timestamp.

-tab-sep-

One of the following:
* [Array reply](https://redis.io/docs/latest/develop/reference/protocol-spec#arrays), where each element is an [Integer reply](https://redis.io/docs/latest/develop/reference/protocol-spec#integers) representing the timestamp of a upserted sample. For each element that is ignored (see `IGNORE` in [`TS.CREATE`](https://redis.io/docs/latestcommands/ts.create/)), the reply element value will be the largest timestamp in the time series.
* [Simple error reply](https://redis.io/docs/latest/develop/reference/protocol-spec#simple-errors) in these cases: invalid arguments, wrong key type, duplication policy is `BLOCK`, or when `timestamp` is older than the retention period compared to the maximum existing timestamp.



## See also

[`TS.MRANGE`](https://redis.io/docs/latestcommands/ts.mrange/) | [`TS.RANGE`](https://redis.io/docs/latestcommands/ts.range/) | [`TS.MREVRANGE`](https://redis.io/docs/latestcommands/ts.mrevrange/) | [`TS.REVRANGE`](https://redis.io/docs/latestcommands/ts.revrange/)

## Related topics

[RedisTimeSeries](https://redis.io/docs/latest/develop/data-types/timeseries/)