remove deprecated new Buffer() usage

Author: Salakar

benchmarks/multi_bench.js

@@ -213,11 +213,11 @@ Test.prototype.print_stats = function () {
 };
 
 small_str = '1234';
-small_buf = new Buffer(small_str);
+small_buf = Buffer.from(small_str);
 large_str = (new Array(4096 + 1).join('-'));
-large_buf = new Buffer(large_str);
+large_buf = Buffer.from(large_str);
 very_large_str = (new Array((4 * 1024 * 1024) + 1).join('-'));
-very_large_buf = new Buffer(very_large_str);
+very_large_buf = Buffer.from(very_large_str);
 
 tests.push(new Test({descr: 'PING', command: 'ping', args: []}));
 tests.push(new Test({descr: 'PING', command: 'ping', args: [], batch: 50}));

index.js

@@ -829,7 +829,7 @@ RedisClient.prototype.internal_send_command = function (command_obj) {
             // 30000 seemed to be a good value to switch to buffers after testing and checking the pros and cons
             if (args[i].length > 30000) {
                 big_data = true;
-                args_copy[i] = new Buffer(args[i], 'utf8');
+                args_copy[i] = Buffer.from(args[i], 'utf8');
             } else {
                 args_copy[i] = args[i];
             }