Plus: Explore systematic and chaotic testing, get to know the basics of expressions in AngularJS, and more. [DZone]( January 1, 2022 DZone Daily Picks Today, explore Observer Design Pattern in Java, get to know the basics of expressions in AngularJS, and more. [On-Demand Webinar]( [What Is Kubernetes Security?]( Explore the most common K8s security pitfalls to avoid, how to identify risks in your clusters (and what to do about them), and more! [Learn more >]( Daily Picks [Observer Design Pattern in Java: Introduction, Example, and Key Points]( [Ram N > Java Zone]( [How To Insert, Retrieve, and Query Data From Amazon Dynamo DB in Mule 4]( [Kunal Thakur > Integration Zone]( [Avoid Yoda Conditions in Perl You Should]( [Mark Gardner > Open Source Zone]( [What Are Expressions in AngularJS?]( [Ronak Shah > Web Dev Zone]( [Privacy and Confidentiality in Security Testing]( [Tania Zhydkova > Security Zone]( [Systematic and Chaotic Testing: A Way to Achieve Cloud Resilience]( [Gaurav Aggarwal > Cloud Zone]( New Downloads from DZone [REFCARD] [Getting Started With Distributed SQL]( In recent years, NoSQL distributed databases have become common, as they are built from the ground up to be distributed. Yet they force difficult design choices such as choosing availability over consistency, data integrity, and ease of query to meet their applicationsâ need for scale. This Refcard serves as a reference to the key characteristics of distributed SQL databases, how functionality compares across vendors' offerings, and the criteria for designing a proof of concept. [Free Download >]( [REFCARD] [Getting Started With Observability for Distributed Systems]( Implementing a reliable observability strategy, and the proper tooling for your unique business requirements, gives your teams the data and insights needed to properly operate, manage, and optimize their entire distributed ecosystem. This Refcard covers the three pillars of observability â metrics, logs, and traces â and how they not only complement an organization's monitoring efforts but also work together to help profile, interpret, and optimize system-wide performance. [Free Download >]( [REFCARD] [Getting Started With Feature Flags]( As a core component of continuous delivery, feature flagging empowers developers to release software faster, more reliably, and with more control. This Refcard provides an overview of the concept, ways to get started with feature flags, and how to manage features at scale. [Free Download >]( [ON-DEMAND WEBINAR] [How to Operate an Enterprise Scale Apache Kafka Cluster]( Operating an enterprise scale Apache Kafka cluster successfully requires extensive knowledge and expertise, which is in short supply in todayâs market. Creating a cluster is difficult as is, but what about ongoing operations and maintenance? Rather than the increased risk in finding a talented team or doing it yourself, weâll explore how Instaclustrâs platform simplifies all the complexities involved in the effective management and deployment of Kafka backed by industry-leading SLAs. [Free Download >]( [ON-DEMAND WEBINAR] [What Do IT and Engineering Leaders Need to Know About Observability]( Whether you deliver a SaaS experience or ship shrink-wrap software, you must have some strategy for monitoring, troubleshooting, and analyzing your software in the wild. Someone, whether you or your customer, needs to be able to detect and respond to issues in production. Watch this webinar to learn all about observability, how it increases the troubleshooting competency of an organization, and more! [Free Download >]( [NEW TREND REPORT] [Application Performance Management]( DZoneâs 2021 APM Trend Report dives deeper into the management of application performance in distributed systems, including observability, intelligent monitoring, and rapid, automated remediation. It also provides an overview of how to choose an APM tool provider, common practices for self-healing, and how to manage pain points that distributed cloud-based architectures cause. Through research and thoughtfully curated articles, this report offers a current assessment of where real enterprises are in their journey to design APM approaches for modern architectures. [Free Download >]( [facebook]( [twitter]( [linkedin]( [youtube]( [Help](mailto:support@dzone.com) | [Manage Preferences]( DZone, 600 Park Offices Dr, Suite 300, Research Triangle Park, NC 27709 © DZone 2021