Session-Level Cache Every SqlSession holds an internal cache that is active by default. This local storage avoids redundant database calls when identical queries run inside the same session. Internal Mechanics The cache is backed by a Map scoped to the session. When a query arrives, MyBatis checks t...
Command-Line Options for Asynchronous Execution -B SECONDS or --background SECONDS: Run tasks asynchronously, failing after specified seconds (default: N/A) -P POLL_INTERVAL or --poll POLL_INTERVAL: Set poll interval when using -B (default: 15 seconds) -f FORKS or --forks FORKS: Specify number of pa...
Parameter Constness in Qt Methods In C++ and Qt, declaring a function parameter as const enforces immutability within the function scope. This is not merely stylistic—it affects correctness, optimization opportunities, and API clarity. A non-const reference parameter allows mutation of the original...
Redis Configuration File Overview The Redis configuration file resides in the Redis installation directory with the filename redis.conf. Configuration Methods Method 1: Direct modification of the redis.conf file content. Method 2: Using the CONFIG command to view or modify settings. CONFIG Command U...
Reading and Writing Text Files In Python 2, strings are byte sequences by default (ASCII), while Unicode strings require a u'' prefix. All text processing should use Unicode internally, with explicit encoding/decoding at I/O boundaries to avoid corruption. Python 3 simplifies this: the str type is U...
Cache Utilization Fundamentals Locality Principles Temporal Locality: Frequently accessed data tends to be reused shortly after access. This means that variables used repeatedly within loops can benefit from being cached in CPU registers. Spatial Locality: Adjacent memory locations are often loaded...
Introduction After understanding how operating systems manage memory, we can now explore how Go leverages these underlying mechanisms to optimize memory usage. Go's memory management is largely inspired by tcmalloc, with minor adjustments tailored to its specific requirements. Go handles memory auto...
In Vue.js, v-if manages conditional rendering based on expression truthiness. Conversely, v-for iterates over data sources to generate multiple DOM elements. Optimizing list rendering requires assigning a unique key property to each item, enabling the Diff algorithm to track node identity efficientl...
Debouncing and Throttling High-frequency event triggers, such as scrolling or rapid clicks, can lead to excessive execution of event handlers, wasting browser resources. These techniques manage execution frequency to improve performance. Debouncing limits execution to a single occurrence, either the...
Second Assignment: Individual Project Item Content This assignment belongs to which course → Go to the course homepage Where is this assignment required → View assignment requirements Assignment objective Train individual simple project development skills, learn to use performance testing tools and...