Memcached, system of the distributed memory caching, is often used to increase the performance and availability of the hosted application through decreasing database load. It creates a common cache for all the application nodes and represents your application short-term memory.…
I/O Multiplexing in Linux
I will talk about synchronous I/O and asynchronous I/O, blocking I/O and non-blocking I/O of network I/O in this article. We need to understand a few concepts first: User and Kernel Mode In any modern operating system, the CPU is…
Goroutine, Concurrency and Parallelism
Concurrency is not Parallelism. Parallelism is when two or more threads are executing code simultaneously against different processors. If you configure the runtime to use more than one logical processor, the scheduler will distribute goroutines between these logical processors which…
TCP Congestion Control Algorithm
Hybla Hybla aims to eliminate penalization of TCP connections that incorporate a high-latency terrestrial or satellite radio link, due to their longer round-trip times. It stems from an analytical evaluation of the congestion window dynamics, which suggests the necessary modifications…