Tecniche Di Troubleshooting Nei Sistemi DistribuitiK-Tech Formazione
Questo seminario sulle tecniche di troubleshooting fa rientra nella collaborazione fra K-Tech (http://www.k-tech.it/) e la Facoltà di Ingegneria dell’Università Roma TRE, nell’ambito delle attività della Consulta.
Il seminario presenta come risolvere problemi tipici dei sistemi distribuiti che avvengono in produzione. Insieme agli esempi pratici si presenta anche un metodo per il troubleshooting che assicura una maniera veloce ed efficace per la determinazione dei problemi ed in generale per la gestione delle performance applicative. Il metodo si basa sulle evidenze del monitoraggio e pone l'accento sulla qualità delle informazioni raccolte in produzione, il fattore più determinante, assieme al tempo, per tutto il processo di troubleshooting. Questo materiale è preso da un corso di più giorni offerto da K-Tech s.r.l. Il corso ha lo scopo di mostrare agli Application Server Administrator (ASA) cosa fare per rendere possibile la risoluzione dei problemi in breve tempo e cosa evitare attraverso il confronto dei risultati di queste azioni. Gli esempi pratici mostrano come applicare correttamente il metodo e selezionare gli strumenti più adatti in ogni singolo caso.
Per conoscere le iniziative di K-Tech seguiteci sul nostro sito: http://www.k-tech.it/
Le operazioni di testing possono richiedere molto tempo e possono implicare ingenti costi per le imprese. Per questo motivo è di fondamentale importanza individuare sul mercato le migliori soluzioni disponibili, al fine di ridurre al minimo gli effort impiegati per testare le proprie applicazioni.
TestComplete di SmartBear centra appieno questi obiettivi: TestComplete, infatti, offre una piattaforma di test per creare, eseguire e mantenere in modo semplice test automatici per applicazioni software di tipo desktop, Web, mobile, e client-server, favorendo un’elevata riduzione dei tempi e dei costi dedicati alle operazioni di testing.
In questo webinar uno dei Testing Guru di Emerasoft mostra come sfruttare al meglio le potenzialità offerte dal testing automatico grazie all’utilizzo di TestComplete.
Guarda il webinar on demand: https://www.youtube.com/watch?v=N7aTTfSoREI
Test, Tools and Tips per tester e non.
Consigli su come affrontare il testing e come comportarsi con applicazioni di tipo web, con scenari e possibili soluzioni con vari tools a disposizione
Demystify web application vulnerability assessmentAntonio Parata
In questa presentazione vengono trattati vari argomenti relativi al security testing e a come automatizzarli. Vengono inoltre fornite dei casi d'uso di automazione all'interno di un SDLC.
Il processo di certificazione della capacità operativa delle applicazioni web è basato su un metodo analitico che permette di predire il comportamento del sistema in produzione.
Il comportamento dell’applicazione viene misurato durante test eseguiti nell’ambiente di stress che usano carichi di lavoro progressivamente crescenti. Attraverso l’andamento dei principali parametri di performance si costruisce un modello lineare che descrive il comportamento del sistema in funzione del carico di lavoro. Tale modello è utilizzato per prevedere le performance del sistema in produzione.
Saranno presentati alcuni esempi concreti, ognuno con necessità e complessità diverse, in cui abbiamo applicato con successo il processo di certificazione. Per ognuno di essi mostreremo le specificità dell’analisi preliminare, gli strumenti software disponibili, gli obiettivi preposti e come questi siano stati raggiunti utilizzando il metodo esposto.
Troubleshooting a server side JVM: fast problem determinationK-Tech Formazione
Queste slide sono relative all’intervento che K-Tech http://www.k-tech.it/ ha presentato all’evento Jax Italia il 13 novembre a Milano.
Speaker: Giuseppe Galli
We present a set of common issues for a server side Java Virtual Machine (JVM), together with practical examples demonstrating how to troubleshoot them successfully. This material is taken from a multi-day course offered by K-Tech s.r.l. The course aims to skill Application Servers Administrators (ASAs) in taking actions that facilitate and accelerate the path to the solution, focusing on the most effective way to minimize the impact on the production. To achieve this, we present a simple but comprehensive and efficient methodology and discuss some common scenarios. We also discuss ways to apply the presented methodology to practical scenarios and compare the results to those of actions taken by ASA.
Presentazione di Dab:exporter, il software per l'accesso, l'estrazione e l'analisi dei dati su SAP, integrabile con ACL e Datev DDAF.
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Introducing Dab:exporter, the technology SAP data access, extraction, analysis, that can be combined with ACL and Datev DDAF.
La gestione integrata dell’infrastruttura e dei servizi IT - User Conference ...ManageEngine Italia
IT360 integra in un'unica soluzione gran parte dei moduli della suite ManageEngine, offrendo allo staff IT tutti gli strumenti per monitorare l’infrastruttura IT e gestire i servizi (IT Service Management) secondo le best practice ITIL.
Dalla console web è possibile monitorare e misurare le prestazioni della rete, dei server, delle applicazioni, gestire gli asset IT e i processi HelpDesk di Incident, Problem e Change Management (ITIL).
Il modulo di Business Service Management permette di mettere in relazione i servizi offerti al business con le risorse dell’infrastruttura IT e di valutare correttamente l’impatto di un’interruzione o di un decadimento delle performance.
In caso di fault di un elemento dell’infrastruttura (es. un Database Server), IT360 invia un allarme (email) allo staff-IT e apre automaticamente un incident sul sistema di HelpDesk, segnalando i servizi di business su cui il fault ha impatto, e assegnando la priorità.
Fuzz-testing: A hacker's approach to making your code more secure | Pascal Ze...Codemotion
Increased complexity makes it very hard and time-consuming to keep your software bug-free and secure. We introduce fuzz-testing as a method for automatically and continuously discovering vulnerabilities hidden in your code. The talk will explain how fuzzing works and how to integrate fuzz-testing into your Software Development Life Cycle to increase your code’s security.
Pompili - From hero to_zero: The FatalNoise neverending storyCodemotion
It was 1993 when we decided to venture in a beat'em up game for Amiga. The Catalypse's success story pushed me and my comrade to create something astonishing for this incredible game machine... but things went harder, assumptions were slightly different, and italian competitors appeared out of nowhere... the project died in 1996. Story ended? Probably not...
Il Commodore 65 è un prototipo di personal computer che Commodore avrebbe dovuto mettere in commercio quale successore del Commodore 64. Purtroppo la sua realizzazione si fermò appunto allo stadio prototipale. Racconterò l'affascinante storia del suo sviluppo ed il perchè della soppressione del progetto ormai ad un passo dalla immissione in commercio.
Rivivere l'ebbrezza di progettare un vecchio computer o una consolle da bar è oggi possibile sfruttando le FPGA, ovvero logiche programmabili che consentono a chiunque di progettare il proprio hardware o di ricrearne uno del passato. In questa sessione si racconta come dal reverse engineering dell'hardware di vecchie glorie come il Commodore 64 e lo ZX Spectrum sia stato possibile farle rivivere attraverso tecnologie oggi alla portata di tutti.
Michel Schudel - Let's build a blockchain... in 40 minutes! - Codemotion Amst...Codemotion
There's a lot of talk about blockchain, but how does the technology behind it actually work? For developers, getting some hands-on experience is the fastest way to get familiair with new technologies. So let's build a blockchain, then! In this session, we're going to build one in plain old Java, and have it working in 40 minutes. We'll cover key concepts of a blockchain: transactions, blocks, mining, proof-of-work, and reaching consensus in the blockchain network. After this session, you'll have a better understanding of core aspects of blockchain technology.
Richard Süselbeck - Building your own ride share app - Codemotion Amsterdam 2019Codemotion
When was the last time you were truly lost? Thanks to the maps and location technology in our phones, a whole generation has now grown up in a world where getting lost is truly a thing of the past. Location technology goes far beyond maps in the palm of our hand, however. In this talk, we will explore how a ridesharing app works. How do we discover our destination?How do we find the closest driver? How do we display this information on a map? How do we find the best route?To answer these questions,we will be learning about a variety of location APIs, including Maps, Positioning, Geocoding etc.
Eward Driehuis - What we learned from 20.000 attacks - Codemotion Amsterdam 2019Codemotion
Eward Driehuis, SecureLink's research chief, will guide you through the bumpy ride we call the cyber threat landscape. As the industry has over a decade of experience of dealing with increasingly sophisticated attacks, you might be surprised to hear more attacks slip through the cracks than ever. From analyzing 20.000 of them in 2018, backed by a quarter of a million security events and over ten trillion data points, Eward will outline why this happens, how attacks are changing, and why it doesn't matter how neatly or securely you code.
Francesco Baldassarri - Deliver Data at Scale - Codemotion Amsterdam 2019 - Codemotion
IoT revolution is ended. Thanks to hardware improvement, building an intelligent ecosystem is easier than never before for both startups and large-scale enterprises. The real challenge is now to connect, process, store and analyze data: in the cloud, but also, at the edge. We’ll give a quick look on frameworks that aggregate dispersed devices data into a single global optimized system allowing to improve operational efficiency, to predict maintenance, to track asset in real-time, to secure cloud-connected devices and much more.
Martin Förtsch, Thomas Endres - Stereoscopic Style Transfer AI - Codemotion A...Codemotion
What if Virtual Reality glasses could transform your environment into a three-dimensional work of art in realtime in the style of a painting from Van Gogh? One of the many interesting developments in the field of Deep Learning is the so called "Style Transfer". It describes a possibility to create a patchwork (or pastiche) from two images. While one of these images defines the the artistic style of the result picture, the other one is used for extracting the image content. A team from TNG Technology Consulting managed to build an AI showcase using OpenCV and Tensorflow to realize such goggles.
Melanie Rieback, Klaus Kursawe - Blockchain Security: Melting the "Silver Bul...Codemotion
The document summarizes some of the security issues with blockchain technology. It discusses how blockchain is not a "silver bullet" and does not inherently solve problems like privacy and security of smart devices. It outlines various application security issues with complex code, protocols, and difficulty of updates on blockchains. Concerns over data immutability and security of smart contracts are also covered. The document questions whether blockchain truly provides the level of decentralization and anonymity claimed, and outlines some impossibility results and limitations of existing approaches to achieving security and privacy in blockchain systems.
Angelo van der Sijpt - How well do you know your network stack? - Codemotion ...Codemotion
The document provides an overview of the HTTP network protocol in its early stages of development. It summarizes the initial IMP (Interface Message Processor) software used to establish connections and transmit messages over the ARPANET. It outlines some early requirements for host-to-host software to enable simple and advanced use between computer systems. The document also describes the initial host software specifications, including establishing connections, transmitting data efficiently, and implementing error checking between connected systems. This was one of the first documents to define core aspects of the early HTTP network protocol to enable information exchange over the fledgling internet.
Lars Wolff - Performance Testing for DevOps in the Cloud - Codemotion Amsterd...Codemotion
Performance tests are not only an important instrument for understanding a system and its runtime environment. It is also essential in order to check stability and scalability – non-functional requirements that might be decisive for success. But won't my cloud hosting service scale for me as long as I can afford it? Yes, but… It only operates and scales resources. It won't automatically make your system fast, stable and scalable. This talk shows how such and comparable questions can be clarified with performance tests and how DevOps teams benefit from regular test practise.
Sascha Wolter - Conversational AI Demystified - Codemotion Amsterdam 2019Codemotion
Sascha will demonstrate the opportunities and challenges of Conversational AI learned from the practice. Both Technology and User Experience will be covered introducing a process finding micro-moments, writing happy paths, gathering intents, designing the conversational flow, and finally publishing on almost all channels including Voice Services and Chatbots. Valuable for enterprises, developers, and designers. All live on stage in just minutes and with almost no code.
Michele Tonutti - Scaling is caring - Codemotion Amsterdam 2019Codemotion
A key challenge we face at Pacmed is quickly calibrating and deploying our tools for clinical decision support in different hospitals, where data formats may vary greatly. Using Intensive Care Units as a case study, I’ll delve into our scalable Python pipeline, which leverages Pandas’ split-apply-combine approach to perform complex feature engineering and automatic quality checks on large time-varying data, e.g. vital signs. I’ll show how we use the resulting flexible and interpretable dataframes to quickly (re)train our models to predict mortality, discharge, and medical complications.
Pat Hermens - From 100 to 1,000+ deployments a day - Codemotion Amsterdam 2019Codemotion
Coolblue is a proud Dutch company, with a large internal development department; one that truly takes CI/CD to heart. Empowerment through automation is at the heart of these development teams, and with more than 1000 deployments a day, we think it's working out quite well. In this session, Pat Hermens (a Development Managers) will step you through what enables us to move so quickly, which tools we use, and most importantly, the mindset that is required to enable development teams to deliver at such a rapid pace.
James Birnie - Using Many Worlds of Compute Power with Quantum - Codemotion A...Codemotion
Quantum computers can use all of the possible pathways generated by quantum decisions to solve problems that will forever remain intractable to classical compute power. As the mega players vie for quantum supremacy and Rigetti announces its $1M "quantum advantage" prize, we live in exciting times. IBM-Q and Microsoft Q# are two ways you can learn to program quantum computers so that you're ready when the quantum revolution comes. I'll demonstrate some quantum solutions to problems that will forever be out of reach of classical, including organic chemistry and large number factorisation.
Don Goodman-Wilson - Chinese food, motor scooters, and open source developmen...Codemotion
Chinese food exploded across America in the early 20th century, rapidly adapting to local tastes while also spreading like wildfire. How was it able to spread so fast? The GY6 is a family of scooter engines that has achieved near total ubiquity in Europe. It is reliable and cheap to manufacture, and it's made in factories across China. How are these factories able to remain afloat? Chinese-American food and the GY6 are both riveting studies in product-market fit, and both are the product of a distributed open source-like development model. What lessons can we learn for open source software?
Pieter Omvlee - The story behind Sketch - Codemotion Amsterdam 2019Codemotion
The design space has exploded in size within the last few years and Sketch is one of the most important milestones to represent the phenomenon. But behind the scenes of this growing reality there is a remote team that revolutionizes the design space all without leaving the home office. This talk will present how Sketch has grown to become a modern, product designer's tool.
Dave Farley - Taking Back “Software Engineering” - Codemotion Amsterdam 2019Codemotion
Would you fly in a plane designed by a craftsman or would you prefer your aircraft to be designed by engineers? We are learning that science and empiricism works in software development, maybe now is the time to redefine what “Software Engineering” really means. Software isn't bridge-building, it is not car or aircraft development either, but then neither is Chemical Engineering. Engineering is different in different disciplines. Maybe it is time for us to begin thinking about retrieving the term "Software Engineering" maybe it is time to define what our "Engineering" discipline should be.
Joshua Hoffman - Should the CTO be Coding? - Codemotion Amsterdam 2019Codemotion
What is the job of a CTO and how does it change as a startup grows in size and scale? As a CTO, where should you spend your focus? As an engineer aspiring to be a CTO, what skills should you pursue? In this inspiring and personal talk, I describe my journey from early Red Hat engineer to CTO at Bloomon. I will share my view on what it means to be a CTO, and ultimately answer the question: Should the CTO be coding?
10. Processo APM
Analisi dei dati
del monitoraggio
Presentazione in produzione
dei risultati
Configurazione/tuning
Stress Test applicazioni sotto
Load Test Monitoring