Transient

I modified the function to use the transients:

function get_the_post_share_count( $post = 0, $services, $time = 3600, $max_sync = 1 ) {
	$count = get_transient( 'post_share_count-' . $post->ID );

    static $updated = 0;
    $post           = get_post( $post );
    $id             = isset( $post->ID ) ? $post->ID : 0;
    $count['total'] = ( isset( $post->post_share_total_count ) ) ? $post->post_share_total_count : 0;
    if ( isset( $post->post_share_count ) && is_array( $post->post_share_count ) )
        $count = array_merge( $count, $post->post_share_count );

    if ( ( ! isset( $post->post_share_last_sync ) || $post->post_share_last_sync < ( time() - $time ) ) && $updated < $max_sync) {
        $updated_counters = post_share_count_sync_post( $id, $services );
        update_post_meta( $id, 'post_share_last_sync', time() );
        if ( ! empty( $updated_counters ) ) {
            update_post_meta( $id, 'post_share_count', $updated_counters );
            if ( $total = array_sum( $updated_counters ) ) {
                update_post_meta( $id, 'post_share_total_count', $total );
                $updated_counters['total'] = $total;
            }
            $count = $updated_counters;
        }
        $updated++;
    }
    set_transient( 'post_share_count-' . $post->ID, $count, $time );

    return apply_filters( 'the_post_share_count', $count, $id );
}

and in my theme I take the data from transient

<?php $tableau_count = get_transient('post_share_count-' . $post->ID);

echo $tableau_count['twitter'];
//and / or
echo $tableau_count['facebook'];
//and / or
echo $tableau_count['googleplus'];
//and / or
echo $tableau_count['total'];
?>

I’m not a developer so I do not know if there is a better solution, but it’s works