do you know? In the chronicle of message middleware, RocketMQ is unique! As a top-level Apache project (TLP), Apache RocketMQ is the first top-level project in the non-Hadoop ecosystem in China. Open source has been widely used worldwide, and it can be called a "palm pearl" in Ali's technology!
Since Kafka mainly locates log transmission, its characteristics are difficult to fully meet Taobao's transaction, order, recharge and other scenarios. Therefore, the Ali team developed RocketMQ that is positioned for non-log reliable message transmission. RocketMQ cancels Kafka's partition mechanism and fully supports sequence Consumption and transaction messages are the best choice for building a highly concurrent architecture.
On Double Eleven four years ago, the Alibaba middleware team and the world jointly witnessed the "first show" of RocketMQ's low-latency storage architecture , successfully carrying the world-class traffic peak that had left countless big cows at a loss , and achieving a silky user experience. A smooth goal. The actual combat in this trillion-level high concurrency scenario is a classic!
01
In front of Kafka, why does Ali prefer RocketMQ?
At present, RocketMQ is widely used by Ali in order, transaction, recharge, stream computing, message push, log streaming, binglog distribution, etc. It is already the "handle" of Ali's core system.
Take the most important example of data reliability . RocketMQ supports asynchronous real-time flashing, synchronous flashing, synchronous replication, and asynchronous replication , while Kafka uses asynchronous flashing, asynchronous replication, and synchronous replication. RocketMQ's synchronous flash disk is more reliable than Kafka in stand-alone, and will not cause data loss due to the operating system crash.
At the same time, the theoretical performance of Kafka synchronous Replication is lower than RocketMQ's synchronous Replication. The reason is that Kafka data is organized in partitions, which means that there will be hundreds of data partitions on a Kafka instance. However, there is only one data partition on an instance of RocketMQ, which can make full use of the IO group Commit mechanism to have better IO performance and reduce performance loss.
Not only that, RocketMQ is better than Kafka in terms of core functions such as real-time message delivery, strict message sequence, and timing messages. It is very suitable for dealing with richer business scenarios , including core scenarios involving large factories such as asynchronous decoupling, sequential messaging, and distributed transaction messaging ( transaction systems, payment red envelopes, etc.)!
02
RocketMQ's hundreds of billions of microservice architecture combat
Combined with the actual scenario of your company, do you know how to choose messaging middleware ? How to apply RocketMQ ? How to design RocketMQ's distributed transaction architecture ?
A real explanation of the message middleware of a large enterprise enterprise red envelope project
Former 58 technical chairman Sun Xuan (known as "Sister Xuan" in Jianghu) believes that as an architect/senior technology , one needs to have the capabilities of business abstract analysis, architecture design, architecture selection, capacity planning, code implementation, and architecture governance. Among these capabilities, the core capabilities are architecture design and architecture selection. Architecture selection is also divided into service architecture selection and storage architecture selection. For example, the selection of microservice architecture design can choose Spring Cloud ecology or Apache Dubbo ecology; in the selection of message middleware, if it is an OLTP type of online data request, Apache RocketMQ, RabbitMQ, ActiveMQ, etc. have different business usage scenarios. It is an OLAP type of offline data request, Apache Kafka is a good choice.
The use of message middleware cannot be blindly selected from the scene. Although there are more OLTP type message middleware, for the characteristics of the scene, choose super-first-line manufacturers, rich open source ecosystem support, widely used in the industry, and stable and reliable technical products Is wise. Apache RocketMQ belongs to this kind of star product!
If you want to quickly master the RocketMQ distributed messaging middleware that Ali regards as the "artifact" , I recommend you to learn from the former 58 technical committee chairman Sun Xuan and 58 Daojia CTO teacher Shen Jian, combined with more than 10 years of practical experience in first-line manufacturers "The necessary skills for architects-the design and practice of message middleware for the core components of hundreds of billions of enterprise microservice architecture" online column class . In 3 days, you can directly master the core architecture technology of Apache RocketMQ in practice. After learning, you can easily deal with the interviews of senior developers/architects of large factories !
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The high-quality course content is composed of 3 chapters and 12 modules , including the essentials of architecture technology: in-depth analysis of the Apache RocketMQ architecture system design/internal power enhancement and optimization: the core technology of the Apache RocketMQ architecture for hundreds of billions of enterprises and the design and practice/customization of distributed transactions Transformation case: The core actual content of the real case design and practice of Apache RocketMQ delayed messages for hundreds of billions of enterprises, through easy-to-understand enterprise case-style explanations, will take you to truly master the design and practice of architect-level Apache RocketMQ, so as to become outstanding The road of the architect is going faster and faster!
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RocketMQ , the messaging middleware used by architects
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