Sharing insights on technical analysis and exchange, making life better through technology.
Learn a step‑by‑step method to integrate a third‑party SDK jar that isn’t in a Maven repository into your Java project by placing the jar in resources, adding a system‑scoped dependency, and configuring the build plugin to include it during packaging.
This article explains how to achieve API idempotency by having clients send a short‑lived unique serial number, storing it as a Redis key with SETNX and an expiration, and handling the Redis response to process or reject duplicate requests.
This article explains how to prevent duplicate order submissions during high‑traffic e‑commerce events by using a server‑generated anti‑duplicate token stored in Redis, detailing the token acquisition, validation flow, and handling of repeated requests to ensure inventory integrity and accurate financial reconciliation.
Learn how Seata's TCC mode addresses distributed transaction challenges when AT mode cannot handle non-relational resources, by detailing its three-phase workflow, handling of common anomalies like empty rollbacks, idempotency, and hanging, and weighing its benefits against complexity.
This article explains RocketMQ's transactional message mechanism, covering half‑message storage, three transaction states, status‑check procedures, key APIs, storage reliability, and the two‑phase commit process that guarantees eventual consistency in distributed systems.
This article explains Seata’s AT transaction mode, its reliance on the classic two‑phase commit protocol, the roles of TC, TM, and RM, and how snapshot‑based SQL interception ensures consistency and rollback in microservice architectures.
Using a local message table, developers can break down distributed transactions into local database operations and asynchronous MQ messages, ensuring eventual consistency, simplifying implementation, and handling retries, while balancing advantages like simplicity and compatibility against drawbacks such as added maintenance and potential queue dependencies.
RabbitMQ, an Erlang‑based open‑source message broker implementing AMQP, uses producers, consumers, exchanges, queues, virtual hosts, connections, and channels to enable scalable, reliable asynchronous communication, with various exchange types and binding mechanisms that organize message routing in microservice architectures.
MySQL employs a two‑phase commit to synchronize InnoDB’s redo log with the server’s binlog, ensuring atomicity during transaction commits and preventing data inconsistencies during crash recovery or replication, while also introducing lock contention, extra I/O, and potential blocking.
This article explains the concepts, purposes, and trade‑offs of Cookies, Sessions, Local Storage, and Session Storage, detailing how each stores data, their security attributes, typical use cases, and the differences between client‑side and server‑side state management in web development.
