The article explains how HashMap can enter an infinite loop, lose data, or corrupt entries when accessed concurrently, illustrates the root causes with JDK 1.7 and 1.8 source code, compares alternative thread‑safe maps, and shows how to answer this classic interview question.
The article examines Go’s claim of eradicating undefined behavior, showing that while the language defines many formerly UB cases such as integer overflow and out‑of‑bounds access, it still harbors UB in concurrent data races, interface type confusion, and certain unspecified behaviors.
This guide walks through common Go bug types, demonstrates a faulty inventory service, shows how to detect data races with -race, fix concurrency issues with proper locking, use conditional debug logging, handle Heisenbugs, and employ git bisect for pinpointing regressions, all with practical code examples.
The article explains the distinction between a data race—simultaneous unsynchronized memory access by goroutines—and a race condition—logic errors caused by timing dependencies—using Go code examples, demonstrates how to reproduce each issue, and shows how mutexes or atomic operations can resolve them.
This article examines whether std::cout is thread‑safe, explains the concepts of data race and race condition, demonstrates how interleaved output can occur in multithreaded C++ programs, and presents several solutions—including mutexes, custom wrappers, and C++20 std::osyncstream—to ensure orderly output.
This article explains the purpose of Go's internal/race package, how the -race compiler flag enables automatic data race detection, provides step‑by‑step usage commands, demonstrates a practical example with code, and outlines the underlying detection mechanism.
This article explains the Java Memory Model, covering how it validates reads, the distinction between shared and exclusive memory areas, data‑race scenarios with example code, visibility challenges, and the JMM‑based solutions such as volatile, synchronized, and memory barriers to prevent harmful reordering.
This article introduces the four major categories of multithreaded bugs—data races, atomicity failures, ordering failures, and deadlocks—explains their causes with Java examples, and provides practical techniques such as using state machines, volatile variables, consistent lock ordering, and proper exception handling to prevent them.
