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Difference between TCP keepalive and HTTP keepaliveWeb/Network 2019. 9. 28. 17:41
1. Overview Let's distinguish the difference between TCP keepalive and HTTP keepalive. 2. Description HTTP Keep-Alive A feature that allows HTTP client (usually browser) and server (webserver) to send multiple request/response pairs over the same TCP connection. This decreases latency for 2nd, 3rd,... HTTP request, decreases network traffic and similar. TCP keepalive A totally different beast. I..
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TCP KeepaliveWeb/Network 2019. 9. 28. 16:57
1. Overview When two hosts are connected over a network via TCP/IP, TCP Keepalive Packets can be used to determine if the connection is still valid, and terminate it if needed. Most hosts that support TCP also support TCP Keepalive. Keepalive characteristics vary across the Lantronix product line. 2. Description 2.1 Options Option Description Keepalive time The duration between two keepalive tra..
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TCP backlog with handshakeWeb/Network 2019. 9. 28. 16:56
1. Overview In simple words, the backlog parameter specifies the number of pending connections the queue will hold(also called pending count in incomplete connection queue). When multiple clients connect to the server, the server then holds the incoming requests in a queue. The clients are arranged in the queue, and the server processes their requests one by one as and when queue-member proceeds..
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Difference between event.stopPropagation and event.preventDefaultWeb/DOMBrowser 2019. 9. 28. 16:25
1. Overview Let's distribute the difference between event.stopPropagation and event.preventDefault in DOM Event fine-grained. 2. Description stopPropagation stops the event from bubbling up the event chain. preventDefault prevents the default action the browser makes on that event. 3. Examples button $("#but").click(function (event) { //using preventDefault, only the browser's default action is ..
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Secure Socket Layer (SSL) and Transport Layer Security (TLS)Web/Security 2019. 9. 28. 15:17
1. Overview The main difference between Secure Sockets Layer(SSL) and Transport Layer Security(TLS) is that the SSL is a protocol that provides communication security in a computer network while TSL protocol is an evolution of the SSL protocol and consists of additional privacy and security features. In brief, SSL is the predecessor to TLS, TLS is more secure and efficient than the SSL. 2. Descr..
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p-valueStats 2019. 9. 27. 15:58
1. Overview Probability of obtaining a sample "more extreme" than the ones observed in your data, assuming $H_{0}$ is true The p-value is one of the key outputs of analyzing data. The p-value is the probability that, if the null hypothesis were true, sampling variation would produce an estimate that is further away from the hypothesized value than our data estimate. Shortly, The p-value tells us..
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Metrics: Accuracy, Precision, Sensitivity, Specificity, and F1 scoreStats 2019. 9. 27. 14:03
1. Overview In pattern recognition, information retrieval and classification, precision (also called positive predictive value) is the fraction of relevant instances among the retrieved instances, while recall (aka sensitivity) is the fraction of relevant instances that have been retrieved over the total amount of relevant instances. Both precision and recall are therefore based on an understand..
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Data serialization and deserializaitonWeb/Network 2019. 9. 27. 12:56
1. Overview Let's figure out What data serialization and deserialization and find Why data serialization and deserialization needs even if it has an overhead than none. 2. Motivation Computer data is generally organized in data structures(also called formatted data) such as arrays, records, graphs, classes, or other configurations for efficiency. When data structures need to be stored or transmi..