# Get feed metrics history

Retrieves historical feed performance metrics for a specific operation and user. Returns a list of feed metrics ordered by timestamp.

RBAC:
- requires ANY of Jobs.Read, Jobs.Manage

Endpoint: GET /api/v1/admin/feed/metrics/history
Version: 1.0
Security: header

## Query parameters:

  - `limit` (integer)
    Maximum number of historical entries to return (default: 100)
    Example: 100

  - `operation` (string, required)
    Feed operation type to filter metrics (e.g., populate, merge, redis, cache)
    Enum: "populate", "merge", "unmerge", "redis", "redisLex", "cache", "idsDb", "db", "add", "remove"

  - `userId` (string, required)
    User ID to retrieve metrics for
    Example: "us_01hxcvk1hjexere4pvtrj0ymqq"

## Response 200 fields (application/json):

  - `time` (integer, required)

  - `count` (integer, required)

  - `op` (string, required)
    Enum: "populate", "merge", "unmerge", "redis", "redisLex", "cache", "idsDb", "db", "add", "remove"

  - `ts` (string, required)
    Example: "2022-03-10T16:15:50Z"

## Response 403 fields (application/json):

  - `errorCode` (string, required)
    Error code

  - `message` (string, required)
    Error message

  - `docUrl` (string)
    Link to documentation