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Using the MinIO API via curl

Using the MinIO API via curl is straightforward, as MinIO is compatible with Amazon S3 API, so most commands follow a similar syntax. Here’s a guide on how to use curl with the MinIO API for some common operations like uploading, downloading, and managing objects. Prerequisites Access Key and Secret Key : Obtain your MinIO Access Key and Secret Key. MinIO Endpoint : Know your MinIO server endpoint, e.g., http://localhost:9000 . Bucket : You may need an existing bucket name, or create a new one using the commands below. Authentication Header For requests to work with MinIO, you need to include authentication in the headers. MinIO uses AWS Signature Version 4 for signing requests. Common Examples 1. List Buckets To list all buckets in your MinIO account, use: curl -X GET \ - -url "http://localhost:9000/" \ - H "Authorization: AWS <AccessKey>:<Signature>" 2. Create a Bucket To create a new bucket, use: curl -X PUT \ - -url "htt...
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훈민정음 1

한자 병음(拼音, pīnyīn) 을 훈민정음(한글) 으로 표기하면 중국어 발음을 한글로 적는 것입니다. 이를 "한어 병음 한글 표기법"이라고도 합니다. 예제 문장 변환 你好！请问有什么可以帮您的吗？ Nǐ hǎo! Qǐng wèn yǒu shé me kě yǐ bāng nín de ma? 니 하오! 칭 원 요우 션머 커이 방 닌 더 마? 병음 → 훈민정음(한글) 변환 원칙 성조는 표기하지 않음 예: hǎo → 하오 한국어 음운 체계에 맞게 변환 zh, ch, sh → ㅈ, ㅊ, ㅅ x → ㅅ , q → ㅊ , j → ㅈ c → ㅊ , z → ㅈ , s → ㅅ r → ㄹ (혹은 "르") 운모(모음) 변환 a → 아, e → 어/으, i → 이, o → 오, u → 우, ü → 위/위에 ai → 아이, ei → 에이, ao → 아오, ou → 오우 ian → 옌, iang → 양, ing → 잉 복합음운 고려 y, w는 이, 우로 바뀜 (예: yī → 이, wǒ → 워) 추가 예제 중국어 병음 한글 표기 你好 Nǐ hǎo 니 하오 请问 Qǐng wèn 칭 원 你是谁? Nǐ shì shéi? 니 스 셰이? 我很好 Wǒ hěn hǎo 워 헌 하오 谢谢 Xièxiè 셰셰 훈민정음으로 변환할 문장이 있으면 말씀해주세요! 😊 훈민정음으로 권설음(捲舌音, Retroflex) 을 표기하는 방법은 역사적으로 논란이 있지만, 현대 한글 표기에서는 아래와 같은 방식으로 변환할 수 있습니다. 1. 중국어 권설음 (捲舌音, Retroflex) 종류 중국어 병음에서 권설음(혀를 뒤로 말아서 내는 소리) 은 다음 네 가지가 있습니다. 병음 발음 특징 현대 한글 표기 zh ㄉ + 혀를 말아서 '쯔' 즈 (or 쯔 ) ch ㄊ...
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Joining an additional control plane node to an existing Kubernetes cluster

Joining an additional control plane node to an existing Kubernetes cluster involves specific steps to ensure proper synchronization between the control plane components. Below is the detailed process: 1. Pre-Requisites Ensure the following on the new control plane node: Same Kubernetes Version : The new node must have the same Kubernetes version installed as the existing control plane. kubeadm version Kubeadm, Kubelet, and Kubectl Installed : Ensure these tools are installed and configured. Network Configuration : The new control plane must have network connectivity to the existing control plane nodes. 2. Retrieve the Join Command On an existing control plane node, generate the kubeadm join command with the --control-plane flag: kubeadm token create -- print -join-command You will get output similar to: kubeadm join <control-plane-endpoint> : 6443 --token <token> \ --discovery-token- ca -cert-hash sha256 : <hash> \ --control-plane 3. ...
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CDPEvents in puppeteer

In Puppeteer , CDPEvents refers to events emitted by the Chrome DevTools Protocol (CDP) . Puppeteer leverages CDP to interact with and control a Chromium-based browser. CDP provides detailed, low-level access to browser internals, such as network traffic, console logs, page lifecycle events, and more. You can listen to these CDP events through Puppeteer’s API to monitor or intercept browser activity. How to Listen for CDP Events in Puppeteer Enable the Required CDP Domain: Some events require enabling a particular domain (e.g., 'Network' , 'Page' , 'Runtime' ). Use page._client() to Access the CDP Session: Although it’s a bit lower-level, Puppeteer allows access to DevTools through the page._client() API. Example: Listening for Network Requests This example demonstrates how to intercept and log network requests using CDP. const puppeteer = require( 'puppeteer' ); ( async () => { const browser = await puppeteer.launch({ headless...
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Vespa vs Milvus

Vespa and Milvus are both powerful open-source vector search engines, but they differ significantly in terms of architecture, features, and use cases. Here's a comparison of the two: 1. Overview Vespa : Type : Distributed Search Engine Primary Focus : Full-text search, recommendation systems, machine learning, and vector search. Use Cases : eCommerce, news, social media, personalized recommendations, and general search. Key Strengths : Scalable, handles both structured and unstructured data, supports complex queries (e.g., multi-field search, ranking, aggregations). Milvus : Type : Vector Database and Search Engine Primary Focus : Efficient similarity search for high-dimensional vectors (commonly used in machine learning, AI, and computer vision tasks). Use Cases : AI-driven applications, image search, video search, recommendation engines based on embeddings, NLP, and other ML-based tasks. Key Strengths : Optimized for vector search, handles billions of vectors wi...
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kafka polling vs listen

In Kafka, polling and listening are two different approaches to consuming messages, and they correspond to different APIs or frameworks. 1. Kafka Polling Polling refers to the use of Kafka's native poll() method in the Kafka Consumer API . It requires the consumer application to actively request messages from Kafka. Key Characteristics: Active Consumption : The application explicitly calls poll() in a loop to fetch messages. Manual Commit : Developers can choose when to commit offsets, giving fine-grained control over processing and checkpointing. Use Case : Recommended for applications where control over message consumption, offset management, or threading is critical. Example (Java): Properties props = new Properties(); props . put (ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, "localhost:9092" ); props . put (ConsumerConfig.GROUP_ID_CONFIG, "group1" ); props . put (ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "earliest" ); props . ...
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How to change java version on gradle of flutter

To change the Java version used by Gradle in a Flutter project, you need to modify the build.gradle files of your Flutter project. Here's how you can do that: Steps: Locate the build.gradle files: You will find two build.gradle files in your Flutter project: One at the root level: <project_root>/android/build.gradle Another inside the app module: <project_root>/android/app/build.gradle Update the Java version in android/build.gradle : In the root build.gradle file, ensure that the sourceCompatibility and targetCompatibility settings are set to the desired Java version. Open <project_root>/android/build.gradle Look for the compileOptions block (or create it if it's not present). Update the Java version like this: allprojects { repositories { google() mavenCentral() } } subprojects { afterEvaluate { project -> if ( project .hasProperty( "android" )) { android { ...
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The pierce selector in Puppeteer

The pierce selector in Puppeteer is an experimental feature that allows you to query shadow DOM elements more easily. Traditional CSS selectors don't pierce through shadow roots because they encapsulate their content to prevent styles and scripts from leaking in or out. The pierce selector solves this by bypassing the shadow DOM boundary and directly selecting elements within shadow trees. How to Use the Pierce Selector in Puppeteer Here’s an example of how to use it effectively: const puppeteer = require ( 'puppeteer' ); ( async ( ) => { const browser = await puppeteer.launch({ headless : false }); const page = await browser.newPage(); // Navigate to a page with shadow DOM await page.goto( 'https://example.com' ); // Select an element inside a shadow DOM using the pierce selector const element = await page.$( 'pierce:#shadow-element-id' ); if (element) { console .log( 'Shadow element found!' ); awai...
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Install and run an FTP server using Docker

To install and run an FTP server using Docker, follow these steps. We’ll use the popular stilliard/pure-ftpd image, which is a lightweight and widely used FTP server. Step 1: Install Docker Make sure Docker is installed on your machine. If it isn’t, install it using the instructions below: Ubuntu/Debian: sudo apt update sudo apt install docker.io -y Mac: Install Docker Desktop from Docker's website . Windows: Install Docker Desktop from Docker's website . Verify Docker is installed: docker --version Step 2: Pull the FTP Server Docker Image Use the stilliard/pure-ftpd image, which is a simple and effective FTP server. docker pull stilliard/ pure -ftpd Step 3: Run the FTP Server Run the FTP server container using the following command: docker run -d --name ftp-server \ - p 21 : 21 -p 30000 - 30009 : 30000 - 30009 \ - e FTP_USER_NAME=testuser \ - e FTP_USER_PASS=testpass \ - e FTP_USER_HOME= /home/testuser \ stilliard/pure-ftpd Explanation...
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