Hi guys..
Ive very recently discovered the world of gRPC and im super enthusiastic
about how i can use it.. Just so i can understand the potential benefits. i
set up the following benchmark test..
track 1: JSON over http1 using a spring boot app running on a google
compute engine.
public static void main(String[] args){
HttpClient httpClient = HttpClientBuilder.create().build();
ObjectMapper mapper = new ObjectMapper();
try {
long startTime = System.currentTimeMillis();
for(int i=0;i<1000;i++) {
MessageRequest value = new MessageRequest(new
CharacterMessage(UUID.randomUUID(), new Vector(10, 20, 30)));
HttpPost request = new HttpPost("http://[google compute engine
ip]:8080/character");
StringEntity params = new
StringEntity(mapper.writeValueAsString(value));
request.addHeader("content-type", "application/json");
request.addHeader("Accept", "application/json");
request.setEntity(params);
HttpResponse response = httpClient.execute(request);
BufferedReader br = new BufferedReader(new
InputStreamReader((response.getEntity().getContent())));
String output;
StringBuilder sb = new StringBuilder();
while ((output = br.readLine()) != null) {
sb.append(output);
}
MessageResponse mr = mapper.readValue(sb.toString(),
MessageResponse.class);
System.out.println("Output from Server .... \n");
System.out.println(mr.getCharacterMessage().getPossition());
}
System.out.println("all
done!!:"+(System.currentTimeMillis()-startTime));
}catch (Exception ex) {
ex.printStackTrace();
}
track 2: proto buffer over http2 using grpc server running on google
compute engine
public static void main(String[] args){
ManagedChannel channel = ManagedChannelBuilder
.forAddress("35.185.244.15", 8080)
.usePlaintext(true)
.build();
CharacterServiceGrpc.CharacterServiceBlockingStub stub =
CharacterServiceGrpc.newBlockingStub(channel);
long startTime = System.currentTimeMillis();
for(int i=0;i<1000;i++) {
MessageResponse response = stub.updateCharacter(
MessageRequest.newBuilder()
.setCharacterMessage(
CharacterMessage.newBuilder()
.setId(ByteString.copyFrom(asBytes(UUID.randomUUID())))
.setPosstion(Vector.newBuilder()
.setX(10).setY(20).setZ(30).build())
.build())
.build());
System.out.println("response:" +
response.getCharacterMessage().getPosstion());
}
System.out.println("finished message
transfer:"+(System.currentTimeMillis()-startTime));
}
public static byte[] asBytes(UUID uuid) {
ByteBuffer bb = ByteBuffer.wrap(new byte[16]);
bb.putLong(uuid.getMostSignificantBits());
bb.putLong(uuid.getLeastSignificantBits());
return bb.array();
}
So i ran both cases (each does a 1000) request from my place in New Zealand
to us-west. I was obviously expecting the gRPC ro better.. But to my
surprise (and disappointment) it didn't.. The JSON/HTTP1 completed in
349270 milliseconds but the gRPC scenario took 364541 milliseconds to
finish..
Can anyone explain what might be going on here?
I would have thought because http being binary more easy to parse and being
more compact that it would do better than REST.. Maybe spring-boot is doing
something clever? I do know that on a case like this you would use a stream
and that finishes in 1974 milliseconds.. But i would have through that just
call to call gRPC would do faster as well.
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