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Optimisation des charges de travail I/O par le profilage en Python

Optimisation des charges de travail I/O par le profilage en Python

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Le profilage en Python est un outil puissant pour optimiser les charges de travail I/O. Il permet d’analyser et de comprendre le comportement des applications et de trouver des moyens d’améliorer les performances.

Optimiser les charges de travail I/O en Python

Testing the Performance

Once you have identified the type of I/O workloads, the next step is to test the performance. This can be done by running the code and measuring the time taken for execution. This will help you understand the areas that need to be optimized. You can also use profiling tools like cProfile and line_profiler to measure the performance of individual functions. These tools provide detailed information about the time taken for each function to execute.

Optimizing the Performance

Once you have identified the areas that need optimization, you can start applying strategies to reduce or manage the bottlenecks. For example, if your code involves multiple disk I/O operations, you can use caching to reduce the number of disk reads and writes. Similarly, if your code involves network I/O, you can use asynchronous programming techniques to improve the performance. Finally, if your code involves database I/O, you can use query optimization techniques to reduce the number of database queries.

Identifier les charges de travail d’E/S

Comprendre le type de charges de travail d’E/S est essentiel comme première étape. Est-ce qu’ils impliquent des opérations d’E/S sur disque, telles que des opérations de lecture/écriture de fichiers, des opérations d’E/S réseau, qui incluent la transmission de données sur un réseau, ou des opérations d’E/S de base de données, comprenant les interactions avec une base de données? Des techniques d’optimisation distinctes s’appliquent à chaque catégorie. J’ai pris en compte les goulots d’étranglement liés aux opérations E/S réseau et aux opérations de lecture/écriture de fichiers pour cet article.

Tester les performances

Une fois que vous avez identifié le type de charges de travail d’E/S, la prochaine étape consiste à tester les performances. Cela peut être fait en exécutant le code et en mesurant le temps nécessaire à son exécution. Cela vous aidera à comprendre les domaines qui doivent être optimisés. Vous pouvez également utiliser des outils de profilage tels que cProfile et line_profiler pour mesurer les performances de chaque fonction. Ces outils fournissent des informations détaillées sur le temps nécessaire à l’exécution de chaque fonction.

Optimiser les performances

Une fois que vous avez identifié les domaines qui doivent être optimisés, vous pouvez commencer à appliquer des stratégies pour réduire ou gérer les goulots d’étranglement. Par exemple, si votre code implique plusieurs opérations d’E/S sur disque, vous pouvez utiliser le cache pour réduire le nombre de lectures et d’écritures sur disque. De même, si votre code implique des opérations d’E/S réseau, vous pouvez utiliser des techniques de programmation asynchrones pour améliorer les performances. Enfin, si votre code implique des opérations d’E/S de base de données, vous pouvez utiliser des techniques d’optimisation des requêtes pour réduire le nombre de requêtes vers la base de données.

L’optimisation des charges de travail d’E/S en Python implique généralement la compréhension des goulots d’étranglement et l’application de stratégies pour les réduire ou les gérer. Le profilage est une ét

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ExpectedConditions in Selenium

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The majority of web products use AJAX (Asynchronous JavaScript and XML), where elements on the page are loaded at varying time intervals. This can lead to timing issues when automation testing is performed using the Selenium framework. What if a test is run on a WebElement that is not present in the DOM? The findElement function will raise ElementNotVisibleException.

Here are other scenarios that can cause issues in Selenium due to the dynamic loading of elements:

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Ktor – A Kotlin Web Framework

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Ktor is an asynchronous web framework written in and designed for Kotlin, leveraging coroutines and allowing you to write asynchronous code without having to manage any threads yourself.

Here is a bit more background information on Ktor. It is backed by Jetbrains, who are also the creators of Kotlin itself. Who better to make a Kotlin web framework than the people that work on the language?

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Debugging Deadlocks and Race Conditions

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Thread debugging has the reputation of being one of the most arduous tasks for developers. I beg to differ. Asynchronous debugging is so much worse. It’s supposed to solve threading problems, and to some degree, async helps… But it doesn’t make debugging simpler. I will get into that in the next post.

Today we’ll discuss the process of debugging threading issues and dealing with deadlocks and race conditions in the debugger.

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Unpacking MySQL Semi-Synchronous Replication: Durability, Consistency and Split-Brains

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MySQL semi-synchronous is a plugin mechanism on top of asynchronous replication that can offer better durability and even consistency. It helps in high availability solutions, but can in itself reduce availability. In this article, we will look at some basics and follow up to present scenarios requiring higher-level intervention to ensure availability and avoid split-brains.

Overview

As a quick recap, semi-synchronous replication is a mechanism where a commit on the primary does not apply the change onto the internal table data and does not respond to the user until the changelog is guaranteed to have been persisted (though not necessarily applied) on a preconfigured number of replicas. We limit our discussion to MySQL 5.7 or equivalent.

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Exciting New Tools For Designers, December 2021

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With the holidays fast approaching, there are plenty of fun gifts for you in this roundup of new tools and resources for web designers. Make sure to share anything you find helpful with others to spread additional holiday cheer.

Here’s what is new for designers this month…

Volley

Volley, billing itself as Snapchat for work, is a new way to collaborate with remote teams. The tool addresses the two main problems of remote teams (lack of communication and loneliness) with an async video messaging app with interactive transcriptions neatly organized into workspaces. Volley emphasizes talking over typing (76% of volleys sent are video), doesn’t require you to coordinate schedules (it’s 100% asynchronous), and lives in a threaded conversation with context that’s neatly organized. Plus, the tool is free to use.

Upnext

Upnext is a new type of reading list. It’s designed to help you save, organize, and focus on fantastic content while expanding your knowledge on your favorite topics. You can create playlists with almost any type of content that you can refer to later and follow “thinkers” that you love. Search and filter content, focus on reading, integrate videos, and even highlight and note specific content in your customized library. This brand-new web app has a waitlist that you can join to get access soon.

Startup 5

Startup 5 is a new version of the popular website builder, and it’s a perfect tool to create your online presence. With Startup, it’s fast and easy to get your business online with pre-designed blocks. It includes a visual editor with 150+ blocks with pre-designed and pre-coded elements and styles you can easily customize in a drag and drop interface. It’s an easy tool for building a website quickly without a coding background. Most users can publish a website quickly and easily.

Flatmap

Flatmap generates Mapbox Vector Tiles from geographic data sources like OpenStreetMap. It is memory-efficient so that you can build a map of the world in a few hours on a single machine without any external tools or database. Vector tiles contain raw point, line, and polygon geometries that clients like MapLibre can use to render custom maps in the browser, native apps, or a server. Flatmap packages tiles into an MBTiles (SQLite) file that can be served using tools like TileServer GL or even queried directly from the browser.

Cleanup.Pictures

Cleanup.Pictures is a web-based tool to remove objects, people, text, or other defects from your images before using them in projects. It’s an AI-based alternative to other photo-editing software.

Linkz.ai

Linkz.ai helps you make smart link preview popups for your website to help encourage greater engagement and interaction for links. It works with a line of code you can install quickly and easily, and then you get smart link previews (in two style options) for every link on your site.

Llline

Llline is an SVG generator that helps you create smooth and organic lines and strokes with plenty of customization options for almost any application. This tool helps create graphic elements in just a few clicks, allowing you to add a few points to a canvas and then draw a smooth curve using these points. You can then tweak the resulting SVG graphic by rotating it, changing its color, giving it a gradient, making it a dashed line, and then you can download or copy the SVG markup.

Lorem.Space

Lorem.Space is a valuable placeholder image tool. With just a little bit of code, you can pop cool placeholder images – from movie posters to shoes – right in your website mockup so that the design is easier to visualize. It’s a great solution that’s fun and keeps you from having to put empty boxes throughout the design. And everything can be randomized, so you don’t spend time looking for placeholders.

Huetone

Huetone can help you create more accessible color palettes by making use of the Advanced Perceptual Contrast Algorithm. The contrast ratios and color combinations show on one screen to help you quickly develop palettes and combinations. Plus, the tool has hotkeys that make it easy to change hues, toggle, and adjust quickly. Then you can export everything to Figma.

Rowy

Rowy is an open-source tool to build on the Google Cloud Platform. You can manage Firestore data in a spreadsheet-style user interface, write Cloud Functions in the browser, and connect to third-party platforms.

AdCreative.ai

AdCreative.ai uses artificial intelligence to help create better ad creative. To get started, you upload logos and color files, connect social and other accounts, pick the sizes you need, write text, pick a background, and upload product images, and let the AI do the work. Once you have the creative you like, you can connect to your online ad accounts for easy use. This is a premium tool that’s free to try.

Flowrift

Flowrift is a tool to browse and then copy and customize Tailwind CSS blocks in groups of collections. Filter by block type and then experiment with the options. It even has e-commerce blocks.

Layout Patterns

Layout Patterns is a collection of layout patterns built using modern CSS APIs to help you build common interfaces such as cards, dynamic grid areas, and full-page layouts.

You.com

You.com is a new private search engine that summarizes the web. The tool is in open beta and includes superior privacy choices, actionable results, extensible apps, and personalization through preferred sources.

3D Icons

3D Icons is a fun set of three-dimensional, full-color icons that are free for all uses. (Donations are accepted.) They integrate with pretty much any web design tool you are using and come in four color styles – clay, gradient, color, and premium – so you can get just the right look for your project. Each icon also includes three rendering views – dynamic, side, and isometric.

Arco Design

Arco Design is a comprehensive React UI components library based on the Arco Design system. It includes a customizable theme and more than 60 crafted components that you can use out of the box.

Seekvectors.com

Seekvectors.com is a search tool to find free resources in five different formats, PNG, SVG, JPG, EPS, and AI.

Outline to Single Stroke

Outline to Single Stroke is a tool in the Figma community that works just like the name implies. Select a filled vector on the canvas, and then you can outline it to a single stroke and adjust the line weight if you like.

Codeamigo

Codeamigo is a new self-paced platform to help you learn coding skills. It’s packed with various lessons for different languages and templates and has something for every level from beginner to advanced.

Sizze

Sizze is a Figma to React Native export tool to create app prototypes and instantly export to code.

CodingFont

CodingFont is an excellent game that can help you pick a font to use for coding that you like! If you spend a lot of time looking at code each day, the right font can help reduce eye strain and make the work a little easier to see.

Christmas Revue

Christmas Revue is the first in a trio of holiday typefaces that you can use this season. This SCG color font is fun and perfect for the holidays with exciting glyphs. It is free for personal use only.

Hotsnow

Hotsnow is a fun display font that has interesting fills and shapes in an all-caps character set. It is free for personal use.

Marlwich

Marlwich is a feminine handwriting-style typeface that has the feel of signing a holiday letter or card. It contains upper- and lower-case characters and is only for non-commercial use for free. (A paid option is available for commercial projects.)

Source

The post Exciting New Tools For Designers, December 2021 first appeared on Webdesigner Depot.

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Using RxJava and Kotlin to Assemble an Android App

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Advanced portable applications accomplish a great deal. They convey information between various back-ends through network APIs. They store and recover information from the local database, process substantial amounts of media, and communicate with web sockets. It’s difficult to monitor all the data from various asynchronous data sources, particularly realizing that the users are used to a simple, fluid user experience.

At the beginning of Android, designers utilized the class AsyncTask from the Android system to accomplish everything outside the primary UI thread. Although async tasks did what they should, utilizing them wasn’t the most charming experience in light of all the standard code you would eventually end up writing due to adaptability issues. If you had a further developed use case (i.e., introducing information from a neighborhood data set on the UI while making an API solicitation to get the most recent information from the backend, refreshing the nearby data set, and introducing the most recent information on the UI), things would quickly spiral. You would wind up with code that is difficult to comprehend and keep up with.

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Java JMS Oversimplified

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Java Messaging Service

JMS or Java Messaging service is a solution for asynchronous communication using messages (objects). Initially, it was part of JSR (specification used in Java EE).

Simple Problem as Example to Explain: User Creation Service

Let’s assume we have any service that can process only 100 requests per second. Any higher load will freeze service or put it down.

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API Publish/Subscribe Between Zato Services

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One of the additions in the upcoming Zato 3.2 release is an extension to its publish/subscribe mechanism that lets services publish messages directly to other services. Let’s check how to use it and how it compares to other means of invoking one’s API services. 

How Does It Work?

In your Zato service, you can publish a message to any other services as below. Simply point self.pubsub.publish to the target service by the latter’s name and it will receive your message.

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