public boolean shouldSample(int hashCode) {
        return hashCode % 10000 < sampleRate;
    }
through {@link BrowserErrorLog#getUniqueId()} hash code.
oap-server/server-receiver-plugin/skywalking-browser-receiver-plugin/src/main/java/org/apache/skywalking/oap/server/receiver/browser/provider/parser/errorlog/listener/ErrorLogRecordSampler.java