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⚡️ Speed up method Buffer.bytesToHexString by 39% #3

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⚡️ Speed up method Buffer.bytesToHexString by 39% #3

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7 changes: 6 additions & 1 deletion client/src/com/aerospike/client/command/Buffer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,8 @@
import com.aerospike.client.util.Utf8;

public final class Buffer {
private static final char[] HEX = new char[] { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f' };


public static Value bytesToKeyValue(int type, byte[] buf, int offset, int len)
throws AerospikeException {
Expand Down Expand Up @@ -245,9 +247,12 @@ public static String bytesToHexString(byte[] buf) {

public static String bytesToHexString(byte[] buf, int offset, int length) {
StringBuilder sb = new StringBuilder(length * 2);
char[] hex = HEX;

for (int i = offset; i < length; i++) {
sb.append(String.format("%02x", buf[i]));
int v = buf[i] & 0xFF;
sb.append(hex[v >>> 4]);
sb.append(hex[v & 0x0F]);
}
return sb.toString();
}
Expand Down