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GET
/
projects
/
{projectId}
/
environments
/
{environmentId}
/
observability
/
server
/
caches
Error
A valid request URL is required to generate request examples
{
  "_grain": 2,
  "_from": 1764083002,
  "_to": 1764083092,
  "_agent": "4b5266a2-fd71-468b-bf05-87b342079cbf",
  "_project_id": "abc123def456",
  "_environment_id": "main",
  "_branch_machine_name": "main-bvxea6i",
  "_contexts": [
    "web"
  ],
  "_contexts_mode": "additive",
  "_distribution_cost": "wt",
  "data": [
    {
      "timestamp": 1764083002
    },
    {
      "timestamp": 1764083014,
      "opcache_usage": 0.308,
      "opcache_isb_usage": 0.629,
      "apcu_usage": 0.008,
      "realpath_usage": 0.109,
      "pcre_usage": 0.304,
      "apcu_hitrate": 0.999,
      "opcache_hitrate": 0.9998
    },
    {
      "timestamp": 1764083024,
      "opcache_usage": 0.308,
      "opcache_isb_usage": 0.629,
      "apcu_usage": 0.008,
      "realpath_usage": 0.105,
      "pcre_usage": 0.313,
      "apcu_hitrate": 0.999,
      "opcache_hitrate": 0.9998
    }
  ]
}

Documentation Index

Fetch the complete documentation index at: https://developer.upsun.com/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
Authorization
string
header
required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Path Parameters

​
projectId
string
required

The unique identifier of the Upsun project

Pattern: [a-z0-9]+
Example:

"abc123def456"

​
environmentId
string
required

The environment identifier

Pattern: .+
Example:

"main"

Query Parameters

​
from
integer<int64>
required

Start timestamp for the time range (Unix timestamp in seconds)

Example:

1704067200

​
to
integer<int64>
required

End timestamp for the time range (Unix timestamp in seconds)

Example:

1704153600

​
grain
integer

Granularity of data points in seconds. Auto-calculated if omitted.

Example:

10

​
contexts[]
enum<string>[]

Filter by execution contexts. Defaults to ["web"] with additive mode when neither contexts nor contexts_mode is specified.

Available options:
web,
cli
​
contexts_mode
enum<string>

Filter mode for contexts parameter. "1" (additive, default) includes only specified contexts. "-1" (subtractive) excludes specified contexts and includes all others. When neither contexts nor contexts_mode is specified, defaults to "1" (additive) with contexts=["web"].

Available options:
1,
-1
Example:

"1"

​
applications[]
string[]

Filter by application names

​
applications_mode
enum<string>

Filter mode for applications parameter. "1" (additive) includes only specified applications. "-1" (subtractive, default) excludes specified applications and includes all others.

Available options:
1,
-1
Example:

"1"

​
instances[]
string[]

Filter by instance names

​
instances_mode
enum<string>

Filter mode for instances parameter. "1" (additive) includes only specified instances. "-1" (subtractive, default) excludes specified instances and includes all others.

Available options:
1,
-1
Example:

"1"

​
distribution_cost
enum<string>

Cost distribution dimension for server load distribution.

Available options:
wt,
pmu

Response

PHP server cache metrics retrieved successfully

​
_grain
integer
required

Data granularity in seconds

Example:

5

​
_from
integer
required

Query start timestamp

Example:

1704067200

​
_to
integer
required

Query end timestamp

Example:

1704153600

​
_agent
string<uuid>
required

Blackfire Agent UUID

Example:

"a38f69ca-3b56-4ea6-beac-272b2568164a"

​
_project_id
string
required

Project identifier

Example:

"abc123def456"

​
_environment_id
string
required

Environment identifier

Example:

"main"

​
_branch_machine_name
string
required

Branch machine name

Example:

"main-bvxea6i"

​
_distribution_cost
enum<string>
required

Applied distribution cost dimension (wt=wall time, pmu=peak memory usage)

Available options:
wt,
pmu
​
data
object[]
required

Time-series cache usage metrics. Each data point contains timestamp and optional data fields. Fields are omitted for timestamps with no data - this indicates no data was received.

​
_contexts
string[] | null

Applied context filter values

​
_contexts_mode
enum<string> | null

Context filter mode (additive=include only, subtractive=exclude)

Available options:
additive,
subtractive
​
_applications
string[] | null

Applied application filter values

​
_applications_mode
enum<string> | null

Application filter mode (additive=include only, subtractive=exclude)

Available options:
additive,
subtractive
​
_instances
string[] | null

Applied instance filter values

​
_instances_mode
enum<string> | null

Instance filter mode (additive=include only, subtractive=exclude)

Available options:
additive,
subtractive
Last modified on May 7, 2026