Getting Started

This guide walks you through creating a scheduler, enqueuing a delayed task, listing tasks, reserving and acknowledging a task, and checking scheduler health.

Prerequisites

A HolaCloud account with API credentials.
curl installed on your machine.

Authentication

Some endpoints require authentication via API key. Pass it using the X-API-Key header or Authorization: Bearer <key>.

Step 1: Create a Scheduler

Create a new scheduler:

curl -X POST "https://api.hola.cloud/schedulers" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "id": "sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "display_name": "my-scheduler"
  }'

POST /schedulers HTTP/1.1
Host: api.hola.cloud
X-API-Key: YOUR_API_KEY
Content-Type: application/json

{
    "id": "sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890",
    "display_name": "my-scheduler"
  }

package main

import (
	"fmt"
	"io"
	"net/http"
	"encoding/json"
	"strings"
)

func main() {
	payload := map[string]any{"display_name": "my-scheduler", "id": "sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890"}
	bodyBytes, err := json.Marshal(payload)
	if err != nil {
		panic(err)
	}
	body := string(bodyBytes)

	req, err := http.NewRequest("POST", "https://api.hola.cloud/schedulers", strings.NewReader(body))
	if err != nil {
		panic(err)
	}
	req.Header.Set("X-API-Key", "YOUR_API_KEY")
	req.Header.Set("Content-Type", "application/json")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(responseBody))
}

<?php
$payload = ['display_name' => 'my-scheduler', 'id' => 'sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890'];
$body = json_encode($payload);

$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/schedulers',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_POSTFIELDS => $body,
    CURLOPT_HTTPHEADER => [
        'X-API-Key: YOUR_API_KEY',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($ch);
if ($response === false) {
    throw new Exception(curl_error($ch));
}
curl_close($ch);

echo $response;

import requests

import json

headers = {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json",
}

payload = {"display_name": "my-scheduler", "id": "sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890"}
body = json.dumps(payload)

response = requests.request(
    "POST",
    "https://api.hola.cloud/schedulers",
    headers=headers,
    data=body
)

print(response.text)

const payload = {"display_name": "my-scheduler", "id": "sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890"};

const response = await fetch("https://api.hola.cloud/schedulers", {
  method: "POST",
  headers: {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify(payload)
});

console.log(await response.text());

const payload = {"display_name": "my-scheduler", "id": "sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890"};

const response = await fetch("https://api.hola.cloud/schedulers", {
  method: "POST",
  headers: {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify(payload)
});

const text = await response.text();
console.log(text);

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.Map;
import java.util.List;

public class Main {
    public static void main(String[] args) throws Exception {
        var payload = Map.of("display_name", "my-scheduler", "id", "sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890");
        var body = new ObjectMapper().writeValueAsString(payload);

        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/schedulers"))
            .method("POST", HttpRequest.BodyPublishers.ofString(body))
            .header("X-API-Key", "YOUR_API_KEY")
            .header("Content-Type", "application/json")
            .build();

        var response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

Expected response:

1{
2  "scheduler": {
3    "id": "sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890",
4    "ready": true,
5    "scheduled": 0,
6    "inflight": 0,
7    "display_name": "my-scheduler"
8  }
9}

Use the scheduler id in subsequent requests.

Step 2: Enqueue a Task with Delay

Enqueue a task that becomes available in 60 seconds:

curl -X POST "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "id": "task-001",
    "payload": {
      "type": "send_email",
      "to": "user@example.com",
      "template": "welcome"
    },
    "delay": "60s",
    "labels": ["project:onboarding", "priority:high"]
  }'

POST /schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks HTTP/1.1
Host: api.hola.cloud
X-API-Key: YOUR_API_KEY
Content-Type: application/json

{
    "id": "task-001",
    "payload": {
      "type": "send_email",
      "to": "user@example.com",
      "template": "welcome"
    },
    "delay": "60s",
    "labels": ["project:onboarding", "priority:high"]
  }

package main

import (
	"fmt"
	"io"
	"net/http"
	"encoding/json"
	"strings"
)

func main() {
	payload := map[string]any{"delay": "60s", "id": "task-001", "labels": []any{"project:onboarding", "priority:high"}, "payload": map[string]any{"template": "welcome", "to": "user@example.com", "type": "send_email"}}
	bodyBytes, err := json.Marshal(payload)
	if err != nil {
		panic(err)
	}
	body := string(bodyBytes)

	req, err := http.NewRequest("POST", "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks", strings.NewReader(body))
	if err != nil {
		panic(err)
	}
	req.Header.Set("X-API-Key", "YOUR_API_KEY")
	req.Header.Set("Content-Type", "application/json")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(responseBody))
}

<?php
$payload = ['delay' => '60s', 'id' => 'task-001', 'labels' => ['project:onboarding', 'priority:high'], 'payload' => ['template' => 'welcome', 'to' => 'user@example.com', 'type' => 'send_email']];
$body = json_encode($payload);

$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_POSTFIELDS => $body,
    CURLOPT_HTTPHEADER => [
        'X-API-Key: YOUR_API_KEY',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($ch);
if ($response === false) {
    throw new Exception(curl_error($ch));
}
curl_close($ch);

echo $response;

import requests

import json

headers = {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json",
}

payload = {"delay": "60s", "id": "task-001", "labels": ["project:onboarding", "priority:high"], "payload": {"template": "welcome", "to": "user@example.com", "type": "send_email"}}
body = json.dumps(payload)

response = requests.request(
    "POST",
    "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks",
    headers=headers,
    data=body
)

print(response.text)

const payload = {"delay": "60s", "id": "task-001", "labels": ["project:onboarding", "priority:high"], "payload": {"template": "welcome", "to": "user@example.com", "type": "send_email"}};

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks", {
  method: "POST",
  headers: {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify(payload)
});

console.log(await response.text());

const payload = {"delay": "60s", "id": "task-001", "labels": ["project:onboarding", "priority:high"], "payload": {"template": "welcome", "to": "user@example.com", "type": "send_email"}};

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks", {
  method: "POST",
  headers: {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify(payload)
});

const text = await response.text();
console.log(text);

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.Map;
import java.util.List;

public class Main {
    public static void main(String[] args) throws Exception {
        var payload = Map.of("delay", "60s", "id", "task-001", "labels", List.of("project:onboarding", "priority:high"), "payload", Map.of("template", "welcome", "to", "user@example.com", "type", "send_email"));
        var body = new ObjectMapper().writeValueAsString(payload);

        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks"))
            .method("POST", HttpRequest.BodyPublishers.ofString(body))
            .header("X-API-Key", "YOUR_API_KEY")
            .header("Content-Type", "application/json")
            .build();

        var response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

Expected response: HTTP 202 Accepted with an empty body.

Step 3: List Tasks

View all tasks in the scheduler:

curl "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks"

GET /schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks HTTP/1.1
Host: api.hola.cloud

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, err := http.NewRequest("GET", "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks", nil)
	if err != nil {
		panic(err)
	}

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(responseBody))
}

<?php
$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'GET',
]);

$response = curl_exec($ch);
if ($response === false) {
    throw new Exception(curl_error($ch));
}
curl_close($ch);

echo $response;

import requests

response = requests.request(
    "GET",
    "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks"
)

print(response.text)

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks", {
  method: "GET"
});

console.log(await response.text());

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks", {
  method: "GET"
});

const text = await response.text();
console.log(text);

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks"))
            .method("GET", HttpRequest.BodyPublishers.noBody())
            .build();

        var response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

Expected response:

 1{
 2  "scheduled": [
 3    {
 4      "id": "task-001",
 5      "future": "2025-06-21T12:01:01Z",
 6      "labels": ["project:onboarding", "priority:high"]
 7    }
 8  ],
 9  "inflight": [],
10  "scheduled_meta": { "page": 1, "per_page": 25, "total": 1, "total_pages": 1 },
11  "inflight_meta": { "page": 1, "per_page": 25, "total": 0, "total_pages": 0 }
12}

Step 4: Reserve and Acknowledge a Task

Once the delay has elapsed, reserve the task:

curl -X POST "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/reserve" \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "worktime": "30s"
  }'

POST /schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/reserve HTTP/1.1
Host: api.hola.cloud
X-API-Key: YOUR_API_KEY
Content-Type: application/json

{
    "worktime": "30s"
  }

package main

import (
	"fmt"
	"io"
	"net/http"
	"encoding/json"
	"strings"
)

func main() {
	payload := map[string]any{"worktime": "30s"}
	bodyBytes, err := json.Marshal(payload)
	if err != nil {
		panic(err)
	}
	body := string(bodyBytes)

	req, err := http.NewRequest("POST", "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/reserve", strings.NewReader(body))
	if err != nil {
		panic(err)
	}
	req.Header.Set("X-API-Key", "YOUR_API_KEY")
	req.Header.Set("Content-Type", "application/json")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(responseBody))
}

<?php
$payload = ['worktime' => '30s'];
$body = json_encode($payload);

$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/reserve',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_POSTFIELDS => $body,
    CURLOPT_HTTPHEADER => [
        'X-API-Key: YOUR_API_KEY',
        'Content-Type: application/json',
    ],
]);

$response = curl_exec($ch);
if ($response === false) {
    throw new Exception(curl_error($ch));
}
curl_close($ch);

echo $response;

import requests

import json

headers = {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json",
}

payload = {"worktime": "30s"}
body = json.dumps(payload)

response = requests.request(
    "POST",
    "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/reserve",
    headers=headers,
    data=body
)

print(response.text)

const payload = {"worktime": "30s"};

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/reserve", {
  method: "POST",
  headers: {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify(payload)
});

console.log(await response.text());

const payload = {"worktime": "30s"};

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/reserve", {
  method: "POST",
  headers: {
    "X-API-Key": "YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify(payload)
});

const text = await response.text();
console.log(text);

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.Map;
import java.util.List;

public class Main {
    public static void main(String[] args) throws Exception {
        var payload = Map.of("worktime", "30s");
        var body = new ObjectMapper().writeValueAsString(payload);

        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/reserve"))
            .method("POST", HttpRequest.BodyPublishers.ofString(body))
            .header("X-API-Key", "YOUR_API_KEY")
            .header("Content-Type", "application/json")
            .build();

        var response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

Expected response:

1{
2  "id": "task-001",
3  "payload": { "type": "send_email", "to": "user@example.com", "template": "welcome" },
4  "lease_expires_at": "2025-06-21T12:02:01Z",
5  "labels": ["project:onboarding", "priority:high"]
6}

Process the task, then acknowledge (delete) it:

curl -X DELETE "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001" \
  -H "X-API-Key: YOUR_API_KEY"

DELETE /schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001 HTTP/1.1
Host: api.hola.cloud
X-API-Key: YOUR_API_KEY

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, err := http.NewRequest("DELETE", "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("X-API-Key", "YOUR_API_KEY")

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(responseBody))
}

<?php
$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'DELETE',
    CURLOPT_HTTPHEADER => [
        'X-API-Key: YOUR_API_KEY',
    ],
]);

$response = curl_exec($ch);
if ($response === false) {
    throw new Exception(curl_error($ch));
}
curl_close($ch);

echo $response;

import requests

headers = {
    "X-API-Key": "YOUR_API_KEY",
}

response = requests.request(
    "DELETE",
    "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001",
    headers=headers
)

print(response.text)

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001", {
  method: "DELETE",
  headers: {
    "X-API-Key": "YOUR_API_KEY"
  }
});

console.log(await response.text());

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001", {
  method: "DELETE",
  headers: {
    "X-API-Key": "YOUR_API_KEY"
  }
});

const text = await response.text();
console.log(text);

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/tasks/task-001"))
            .method("DELETE", HttpRequest.BodyPublishers.noBody())
            .header("X-API-Key", "YOUR_API_KEY")
            .build();

        var response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

Expected response: HTTP 204 No Content.

Step 5: Check Scheduler Health

Verify the scheduler is healthy:

curl "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/health"

GET /schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/health HTTP/1.1
Host: api.hola.cloud

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, err := http.NewRequest("GET", "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/health", nil)
	if err != nil {
		panic(err)
	}

	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()

	responseBody, err := io.ReadAll(resp.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(responseBody))
}

<?php
$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/health',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'GET',
]);

$response = curl_exec($ch);
if ($response === false) {
    throw new Exception(curl_error($ch));
}
curl_close($ch);

echo $response;

import requests

response = requests.request(
    "GET",
    "https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/health"
)

print(response.text)

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/health", {
  method: "GET"
});

console.log(await response.text());

const response = await fetch("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/health", {
  method: "GET"
});

const text = await response.text();
console.log(text);

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Main {
    public static void main(String[] args) throws Exception {
        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/schedulers/sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890/health"))
            .method("GET", HttpRequest.BodyPublishers.noBody())
            .build();

        var response = HttpClient.newHttpClient().send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.body());
    }
}

Expected response:

1{
2  "status": "ok",
3  "ready": true,
4  "scheduled": 0,
5  "inflight": 0,
6  "scheduler_id": "sched-a1b2c3d4-e5f6-7890-abcd-ef1234567890"
7}

Next Steps

Learn how to manage schedulers, including updates and monitoring, in Managing Schedulers.
Dive deeper into the task lifecycle — including lease extension, reschedule, and SSE streaming — in Task Lifecycle.