How can one ensure compliance with external API usage policies when integrating with services like Nominatim?

To ensure compliance with external API usage policies when integrating with services like Nominatim, it is important to carefully review and adhere to the terms and conditions set by the API provider. This may include limitations on the number of requests allowed per day, proper attribution, and restrictions on data usage. Additionally, implementing rate limiting and caching mechanisms can help prevent exceeding usage limits and ensure efficient API usage. 

// Example of implementing rate limiting and caching with Nominatim API
$api_url = 'https://nominatim.openstreetmap.org/search?q=New+York&format=json&limit=1';

// Check if cached response exists
if ($cached_response = apc_fetch('nominatim_response')) {
    $response = $cached_response;
} else {
    // Make API request
    $response = file_get_contents($api_url);

    // Cache response for future use
    apc_store('nominatim_response', $response, 3600); // Cache for 1 hour
}

// Process API response
$data = json_decode($response, true);
echo 'Latitude: ' . $data[0]['lat'] . ', Longitude: ' . $data[0]['lon'];

Keywords

PHP Nominatim API usage policies compliance integration

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