Getting Started

This guide walks you through the basic operations of KVNode: health checks, collection management, and key-value operations.

Health Check

Verify the node is running:

curl "https://api.hola.cloud/healthz"

GET /healthz 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/healthz", 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/healthz',
    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/healthz"
)

print(response.text)

const response = await fetch("https://api.hola.cloud/healthz", {
  method: "GET"
});

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

const response = await fetch("https://api.hola.cloud/healthz", {
  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/healthz"))
            .method("GET", HttpRequest.BodyPublishers.noBody())
            .build();

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

Expected response:

1{"ok":true,"node":"node-1","role":"primary"}

Readiness Check

Check if the node is ready to serve traffic (verifies parent connection for replicas):

curl "https://api.hola.cloud/readyz"

GET /readyz 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/readyz", 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/readyz',
    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/readyz"
)

print(response.text)

const response = await fetch("https://api.hola.cloud/readyz", {
  method: "GET"
});

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

const response = await fetch("https://api.hola.cloud/readyz", {
  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/readyz"))
            .method("GET", HttpRequest.BodyPublishers.noBody())
            .build();

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

Expected response when ready:

1{"ok":true,"node":"node-1","role":"primary","ready":true,"checks":{"wal_replayed":true,"parent_connected":true}}

Create a Collection

Collections are containers for key-value pairs. Create one with a POST request:

curl -X POST "https://api.hola.cloud/v1/collections" \
  -H "apikey: your-api-key" \
  -H "secret: your-api-secret" \
  -d '{"name": "my-collection"}'

POST /v1/collections HTTP/1.1
Host: api.hola.cloud
apikey: your-api-key
secret: your-api-secret

{"name": "my-collection"}

package main

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

func main() {
	payload := map[string]any{"name": "my-collection"}
	bodyBytes, err := json.Marshal(payload)
	if err != nil {
		panic(err)
	}
	body := string(bodyBytes)

	req, err := http.NewRequest("POST", "https://api.hola.cloud/v1/collections", strings.NewReader(body))
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "your-api-key")
	req.Header.Set("secret", "your-api-secret")

	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 = ['name' => 'my-collection'];
$body = json_encode($payload);

$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/v1/collections',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_POSTFIELDS => $body,
    CURLOPT_HTTPHEADER => [
        'apikey: your-api-key',
        'secret: your-api-secret',
    ],
]);

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

echo $response;

import requests

import json

headers = {
    "apikey": "your-api-key",
    "secret": "your-api-secret",
}

payload = {"name": "my-collection"}
body = json.dumps(payload)

response = requests.request(
    "POST",
    "https://api.hola.cloud/v1/collections",
    headers=headers,
    data=body
)

print(response.text)

const payload = {"name": "my-collection"};

const response = await fetch("https://api.hola.cloud/v1/collections", {
  method: "POST",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  },
  body: JSON.stringify(payload)
});

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

const payload = {"name": "my-collection"};

const response = await fetch("https://api.hola.cloud/v1/collections", {
  method: "POST",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  },
  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("name", "my-collection");
        var body = new ObjectMapper().writeValueAsString(payload);

        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/v1/collections"))
            .method("POST", HttpRequest.BodyPublishers.ofString(body))
            .header("apikey", "your-api-key")
            .header("secret", "your-api-secret")
            .build();

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

Expected response:

1{"ok":true,"collection":"my-collection"}

Set a Key-Value Pair

Store a JSON value under a key inside a collection:

curl -X POST "https://api.hola.cloud/v1/collections/my-collection/keys/*" \
  -H "apikey: your-api-key" \
  -H "secret: your-api-secret" \
  -d '{"value": {"user": "alice", "role": "admin"}}'

POST /v1/collections/my-collection/keys/* HTTP/1.1
Host: api.hola.cloud
apikey: your-api-key
secret: your-api-secret

{"value": {"user": "alice", "role": "admin"}}

package main

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

func main() {
	payload := map[string]any{"value": map[string]any{"role": "admin", "user": "alice"}}
	bodyBytes, err := json.Marshal(payload)
	if err != nil {
		panic(err)
	}
	body := string(bodyBytes)

	req, err := http.NewRequest("POST", "https://api.hola.cloud/v1/collections/my-collection/keys/*", strings.NewReader(body))
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "your-api-key")
	req.Header.Set("secret", "your-api-secret")

	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 = ['value' => ['role' => 'admin', 'user' => 'alice']];
$body = json_encode($payload);

$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/v1/collections/my-collection/keys/*',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_POSTFIELDS => $body,
    CURLOPT_HTTPHEADER => [
        'apikey: your-api-key',
        'secret: your-api-secret',
    ],
]);

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

echo $response;

import requests

import json

headers = {
    "apikey": "your-api-key",
    "secret": "your-api-secret",
}

payload = {"value": {"role": "admin", "user": "alice"}}
body = json.dumps(payload)

response = requests.request(
    "POST",
    "https://api.hola.cloud/v1/collections/my-collection/keys/*",
    headers=headers,
    data=body
)

print(response.text)

const payload = {"value": {"role": "admin", "user": "alice"}};

const response = await fetch("https://api.hola.cloud/v1/collections/my-collection/keys/*", {
  method: "POST",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  },
  body: JSON.stringify(payload)
});

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

const payload = {"value": {"role": "admin", "user": "alice"}};

const response = await fetch("https://api.hola.cloud/v1/collections/my-collection/keys/*", {
  method: "POST",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  },
  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("value", Map.of("role", "admin", "user", "alice"));
        var body = new ObjectMapper().writeValueAsString(payload);

        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/v1/collections/my-collection/keys/*"))
            .method("POST", HttpRequest.BodyPublishers.ofString(body))
            .header("apikey", "your-api-key")
            .header("secret", "your-api-secret")
            .build();

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

The * path segment captures the key name. To set the key user:alice, use:

curl -X POST "https://api.hola.cloud/v1/collections/my-collection/keys/user:alice" \
  -H "apikey: your-api-key" \
  -H "secret: your-api-secret" \
  -d '{"value": {"user": "alice", "role": "admin"}}'

POST /v1/collections/my-collection/keys/user:alice HTTP/1.1
Host: api.hola.cloud
apikey: your-api-key
secret: your-api-secret

{"value": {"user": "alice", "role": "admin"}}

package main

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

func main() {
	payload := map[string]any{"value": map[string]any{"role": "admin", "user": "alice"}}
	bodyBytes, err := json.Marshal(payload)
	if err != nil {
		panic(err)
	}
	body := string(bodyBytes)

	req, err := http.NewRequest("POST", "https://api.hola.cloud/v1/collections/my-collection/keys/user:alice", strings.NewReader(body))
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "your-api-key")
	req.Header.Set("secret", "your-api-secret")

	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 = ['value' => ['role' => 'admin', 'user' => 'alice']];
$body = json_encode($payload);

$ch = curl_init();

curl_setopt_array($ch, [
    CURLOPT_URL => 'https://api.hola.cloud/v1/collections/my-collection/keys/user:alice',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_POSTFIELDS => $body,
    CURLOPT_HTTPHEADER => [
        'apikey: your-api-key',
        'secret: your-api-secret',
    ],
]);

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

echo $response;

import requests

import json

headers = {
    "apikey": "your-api-key",
    "secret": "your-api-secret",
}

payload = {"value": {"role": "admin", "user": "alice"}}
body = json.dumps(payload)

response = requests.request(
    "POST",
    "https://api.hola.cloud/v1/collections/my-collection/keys/user:alice",
    headers=headers,
    data=body
)

print(response.text)

const payload = {"value": {"role": "admin", "user": "alice"}};

const response = await fetch("https://api.hola.cloud/v1/collections/my-collection/keys/user:alice", {
  method: "POST",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  },
  body: JSON.stringify(payload)
});

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

const payload = {"value": {"role": "admin", "user": "alice"}};

const response = await fetch("https://api.hola.cloud/v1/collections/my-collection/keys/user:alice", {
  method: "POST",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  },
  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("value", Map.of("role", "admin", "user", "alice"));
        var body = new ObjectMapper().writeValueAsString(payload);

        var request = HttpRequest.newBuilder()
            .uri(URI.create("https://api.hola.cloud/v1/collections/my-collection/keys/user:alice"))
            .method("POST", HttpRequest.BodyPublishers.ofString(body))
            .header("apikey", "your-api-key")
            .header("secret", "your-api-secret")
            .build();

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

Expected response:

1{"ok":true,"seq":1,"version":1}

Get a Key

Retrieve the value for a specific key:

curl "https://api.hola.cloud/v1/collections/my-collection/keys/user:alice" \
  -H "apikey: your-api-key" \
  -H "secret: your-api-secret"

GET /v1/collections/my-collection/keys/user:alice HTTP/1.1
Host: api.hola.cloud
apikey: your-api-key
secret: your-api-secret

package main

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

func main() {
	req, err := http.NewRequest("GET", "https://api.hola.cloud/v1/collections/my-collection/keys/user:alice", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "your-api-key")
	req.Header.Set("secret", "your-api-secret")

	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/v1/collections/my-collection/keys/user:alice',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'GET',
    CURLOPT_HTTPHEADER => [
        'apikey: your-api-key',
        'secret: your-api-secret',
    ],
]);

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

echo $response;

import requests

headers = {
    "apikey": "your-api-key",
    "secret": "your-api-secret",
}

response = requests.request(
    "GET",
    "https://api.hola.cloud/v1/collections/my-collection/keys/user:alice",
    headers=headers
)

print(response.text)

const response = await fetch("https://api.hola.cloud/v1/collections/my-collection/keys/user:alice", {
  method: "GET",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  }
});

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

const response = await fetch("https://api.hola.cloud/v1/collections/my-collection/keys/user:alice", {
  method: "GET",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  }
});

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/v1/collections/my-collection/keys/user:alice"))
            .method("GET", HttpRequest.BodyPublishers.noBody())
            .header("apikey", "your-api-key")
            .header("secret", "your-api-secret")
            .build();

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

Expected response:

1{"key":"user:alice","value":{"user":"alice","role":"admin"},"version":1,"updatedAt":"2025-01-01T00:00:00Z"}

List Keys with Prefix

List all keys in a collection, optionally filtered by prefix and limited in count:

curl "https://api.hola.cloud/v1/collections/my-collection/keys?prefix=user:&limit=10" \
  -H "apikey: your-api-key" \
  -H "secret: your-api-secret"

GET /v1/collections/my-collection/keys?prefix=user:&limit=10 HTTP/1.1
Host: api.hola.cloud
apikey: your-api-key
secret: your-api-secret

package main

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

func main() {
	req, err := http.NewRequest("GET", "https://api.hola.cloud/v1/collections/my-collection/keys?prefix=user:&limit=10", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "your-api-key")
	req.Header.Set("secret", "your-api-secret")

	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/v1/collections/my-collection/keys?prefix=user:&limit=10',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'GET',
    CURLOPT_HTTPHEADER => [
        'apikey: your-api-key',
        'secret: your-api-secret',
    ],
]);

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

echo $response;

import requests

headers = {
    "apikey": "your-api-key",
    "secret": "your-api-secret",
}

response = requests.request(
    "GET",
    "https://api.hola.cloud/v1/collections/my-collection/keys?prefix=user:&limit=10",
    headers=headers
)

print(response.text)

const response = await fetch("https://api.hola.cloud/v1/collections/my-collection/keys?prefix=user:&limit=10", {
  method: "GET",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  }
});

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

const response = await fetch("https://api.hola.cloud/v1/collections/my-collection/keys?prefix=user:&limit=10", {
  method: "GET",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  }
});

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/v1/collections/my-collection/keys?prefix=user:&limit=10"))
            .method("GET", HttpRequest.BodyPublishers.noBody())
            .header("apikey", "your-api-key")
            .header("secret", "your-api-secret")
            .build();

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

Expected response:

1[{"key":"user:alice","value":{"user":"alice","role":"admin"},"version":1}]

Delete a Key

Remove a key from a collection:

curl -X DELETE "https://api.hola.cloud/v1/collections/my-collection/keys/user:alice" \
  -H "apikey: your-api-key" \
  -H "secret: your-api-secret"

DELETE /v1/collections/my-collection/keys/user:alice HTTP/1.1
Host: api.hola.cloud
apikey: your-api-key
secret: your-api-secret

package main

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

func main() {
	req, err := http.NewRequest("DELETE", "https://api.hola.cloud/v1/collections/my-collection/keys/user:alice", nil)
	if err != nil {
		panic(err)
	}
	req.Header.Set("apikey", "your-api-key")
	req.Header.Set("secret", "your-api-secret")

	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/v1/collections/my-collection/keys/user:alice',
    CURLOPT_RETURNTRANSFER => true,
    CURLOPT_CUSTOMREQUEST => 'DELETE',
    CURLOPT_HTTPHEADER => [
        'apikey: your-api-key',
        'secret: your-api-secret',
    ],
]);

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

echo $response;

import requests

headers = {
    "apikey": "your-api-key",
    "secret": "your-api-secret",
}

response = requests.request(
    "DELETE",
    "https://api.hola.cloud/v1/collections/my-collection/keys/user:alice",
    headers=headers
)

print(response.text)

const response = await fetch("https://api.hola.cloud/v1/collections/my-collection/keys/user:alice", {
  method: "DELETE",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  }
});

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

const response = await fetch("https://api.hola.cloud/v1/collections/my-collection/keys/user:alice", {
  method: "DELETE",
  headers: {
    "apikey": "your-api-key",
    "secret": "your-api-secret"
  }
});

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/v1/collections/my-collection/keys/user:alice"))
            .method("DELETE", HttpRequest.BodyPublishers.noBody())
            .header("apikey", "your-api-key")
            .header("secret", "your-api-secret")
            .build();

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

Expected response:

1{"ok":true,"seq":2,"version":2}

Summary

You have now performed the basic KVNode operations: health checks, collection creation, and full CRUD on key-value pairs. From here, explore replication configuration and multi-language SDK integration.