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A buffer overflow writes data past the end of an allocated buffer, overwriting adjacent memory including the return address on the stack. Historically this let attackers inject shellcode directly. …
Continue Reading about How Do Attackers Exploit Buffer Overflows With Return-Oriented Programming? →
When Stripe processes a payment, it needs to notify your application, update its own internal systems, trigger fraud analysis, and record the event for audit purposes. Calling each destination …
Continue Reading about Why Does Stripe Use Kafka Instead of Just Calling Your API? →
A network partition is when nodes in a distributed system can no longer communicate with each other. The nodes are not down, the network between them is broken. Every distributed system must choose …
Continue Reading about What Happens When a Network Partition Hits Your Distributed System? →
Cassandra defaults to eventual consistency because strong consistency requires coordination between replicas, and coordination costs latency and availability. At its default consistency level of ONE, …
Continue Reading about Why Does Cassandra Let You Read Stale Data by Default? →
Every process on a modern operating system runs in its own virtual address space. The OS and CPU hardware cooperate to translate virtual addresses to physical RAM transparently, isolating processes …
Continue Reading about How Does the OS Manage Virtual Memory and Page Tables? →
False sharing occurs when two threads on different CPU cores modify different variables that happen to sit on the same cache line. The hardware sees writes to the same cache line from two cores and …
Continue Reading about Why Does False Sharing Destroy Multithreaded Performance? →
