The `this` keyword is a very important concept in JavaScript, and also a particularly confusing one to both new developers and those who have experience in other programming languages. In JavaScript, `this` is a reference to an object. In this article, you’ll learn what `this` refers to based on context, and you’ll learn how you can use the `bind`, `call`, and `apply` methods to explicitly determine the value of `this`.
In this tutorial, we do a deep dive on the impressive, new Imagen 4 model. Afterwards, we compare and contrast the capabilities of Imagen 4 with open-source and commercial competitors.
🟢 Low ⏱ 5–15 min Last verified: 3 December 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4871-1 Related CVEs: CVE-2020-10699 CVE-2020-13867 Upstream summary: It was discovered that targetcli-fb did not properly manage socket permissions. A local attacker could use this issue to modify the iSCSI configuration […]
Streaming replication is a popular method you can use to horizontally scale your relational databases. In this tutorial, you will set up physical streaming replication with PostgreSQL 12 on Ubuntu 20.04 using two separate machines running two separate PostgreSQL 12 clusters. One machine will be the primary and the other, the replica.
Introduction This tutorial demonstrates how to Configure Fail2ban on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the default AppStream […]
Implementing a firewall is an important step in securing your server. A large part of that is deciding on the individual rules and policies that will enforce traffic restrictions to your network. Firewalls like iptables also allow you to have a say about the structural…
Uploading files with GraphQL can be a challenge, since there is no built-in support for file uploads. In this tutorial, you will learn to upload images to a third-party storage service directly from your backend application. You will build a GraphQL API that uses an S3-compatible AWS GO SDK from a Go backend application to upload images to object storage. The Go back-end application will expose a GraphQL API and store user data in a PotsgreSQL database.
🟢 Low ⏱ 5–15 min Last verified: 3 December 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4564-1 Related CVEs: CVE-2020-1950 CVE-2020-1951 Upstream summary: It was discovered that Apache Tika can have an excessive memory usage by using a crafted or corrupt PSD file. An attacker could […]
Quickly learn all about the CSS line-height property, the values it can take and some best practices that result in text that’s easy to read.
Learn how to transform the shape of images, SVGs and just about anything using the clip-path property.
