ok2c commented on a change in pull request #352:
URL:
https://github.com/apache/httpcomponents-client/pull/352#discussion_r814901897
##########
File path:
httpclient5/src/main/java/org/apache/hc/client5/http/impl/ExecSupport.java
##########
@@ -45,7 +45,29 @@ public static long getNextExecNumber() {
}
public static String getNextExchangeId() {
- return String.format("ex-%010d", COUNT.incrementAndGet());
+ return createId(COUNT.incrementAndGet());
+ }
+
+ /**
+ * Create an exchange ID.
+ *
+ * Hand rolled equivalent to `String.format("ex-%010d", value)` optimized
to reduce
+ * allocation and CPU overhead.
+ */
+ static String createId(long value) {
+ String longString = Long.toString(value);
+ return "ex-" + zeroPad(10 - longString.length()) + longString;
Review comment:
@carterkozak That would be clever.
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