Investigating OKHTTP/2 H2C Protocol for Microservices: Strange Performance Results
In the world of microservices, choosing the right communication protocol is crucial for optimal performance. In this article, we will investigate the H2C protocol in OKHTTP/2 and the strange performance results observed during testing. We will cover the key concepts, applications, and significance of this protocol in the context of microservices.
What is the H2C Protocol?
H2C is a variation of the HTTP/2 protocol that operates over clear text (unencrypted) connections. Unlike HTTP/2, which requires encryption, H2C allows for unencrypted communication between the client and server. This can be useful in certain scenarios, such as testing or internal network communication, where encryption may not be necessary.
OKHTTP/2 and H2C
OKHTTP/2 is a popular HTTP client library for Java and Android applications. It supports HTTP/2 and H2C protocols, making it a versatile choice for microservices communication. However, during testing, strange performance results were observed when using the H2C protocol in OKHTTP/2.
Strange Performance Results
The tester reported that the H2C protocol did not perform as expected, with significantly lower throughput compared to HTTP/2. This was unexpected, as H2C is supposed to offer similar performance to HTTP/2, without the overhead of encryption. Further investigation is required to determine the cause of these strange performance results.
Applications of H2C in Microservices
Despite the strange performance results observed, H2C can still be a useful protocol for microservices communication in certain scenarios. For example, it can be used for testing or debugging purposes, where encryption is not required. Additionally, it can be used in internal network communication, where security is not a major concern.
Significance of H2C in Microservices
The H2C protocol is a valuable addition to the toolkit of microservices developers. While it may not be the best choice for high-performance communication, it offers a simpler and more lightweight alternative to HTTP/2. By understanding the performance characteristics and limitations of H2C, developers can make informed decisions about when to use it in their microservices architectures.
In conclusion, the H2C protocol in OKHTTP/2 offers a useful alternative to HTTP/2 for microservices communication. While strange performance results were observed during testing, further investigation is required to determine the cause. Despite these issues, H2C can still be a valuable tool for microservices developers, offering a simpler and more lightweight alternative to HTTP/2 in certain scenarios.
References
- OKHTTP/2 documentation: https://square.github.io/okhttp/
- HTTP/2 protocol documentation: https://http2.github.io/http2-spec/
- H2C protocol documentation: https://tools.ietf.org/html/rfc7540#section-3.2
// Example code block for using OKHTTP/2 with H2C
OkHttpClient client = new OkHttpClient.Builder()
.protocols(Arrays.asList(Protocol.H2_PRIOR_KNOWLEDGE))
.build();
Request request = new Request.Builder()
.url("http://example.com/")
.build();
Response response = client.newCall(request).execute();