Application Performance Review Process

DZone

Application performance Review (also known as Application Performance Walkthrough or Application Performance Assessment) is the process of review of an existing application (in production) to evaluate its performance and scalability attributes. Overview.

Handling Failure in Long-Running Processes

DZone

In the previous posts in this series, we've seen some examples of long-running processes , how to model them, and where to store the state. So how can we ensure that our long-running process doesn't get into an inconsistent state if something fails along the way?

Image Processing supports Watermark!

KeyCDN

We’ve extended our Image Processing service with a new feature: Watermark ! The image overlay process consists of 2 parts: the base image and the overlay image. The base image can still be modified with any image processing command.

MezzFS?—?Mounting object storage in Netflix’s media processing platform

The Netflix TechBlog

Mounting object storage in Netflix’s media processing platform By Barak Alon (on behalf of Netflix’s Media Cloud Engineering team) MezzFS (short for “Mezzanine File System”) is a tool we’ve developed at Netflix that mounts cloud objects as local files via FUSE. MezzFS?—?Mounting

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In-Stream Big Data Processing

Highly Scalable

The shortcomings and drawbacks of batch-oriented data processing were widely recognized by the Big Data community quite a long time ago. It became clear that real-time query processing and in-stream processing is the immediate need in many practical applications.

Batch Processing Large Data Sets With Spring Boot and Spring Batch

DZone

Batch processing of data is an efficient way of processing large volumes of data where data is collected, processed and then batch results are produced. Batch processing can be applied in many use cases. tutorial performance spring boot spring batch batch processing

How DevOps Testing can Enhance the Application Development Process?

Kovair

The post How DevOps Testing can Enhance the Application Development Process? We have entered the digital age where technology is flourishing everywhere and is playing an integral role in our lives. Mobile applications are one great.

Top 9 Free Java Process Monitoring Tools and How to Choose One

DZone

To help equip you for the ongoing process of optimization and the life of debugging ahead of you, we’ve gathered a list of the best tools to monitor the JVM in both development and production environments. java open source performance monitoring jvm process java performance process monitoring

Tips to Enhance the Efficiency of Software Testing Process

QAMentor

At present, according to the best software testing companies, there are various automated software testing … The post Tips to Enhance the Efficiency of Software Testing Process appeared first on QA Mentor Blog. Software Testing Test Process & Best Practices

Monitoring Processes with Percona Monitoring and Management

Percona

A few months ago I wrote a blog post on How to Capture Per Process Metrics in PMM. Since that time, Nick Cabatoff has made a lot of improvements to Process Exporter and I’ve improved the Grafana Dashboard to match. Processes by Disk IO.

Zombie Processes are Eating your Memory

Randon ASCII

Zombies probably won’t consume 32 GB of your memory like they did to me, but zombie processes do exist, and I can help you find them and make sure that developers fix them. He’d even written a tool that would dump a list of zombie processes – their names and counts.

The Digital Twin: A Foundational Concept for Stateful Stream Processing

ScaleOut Software

Traditional stream-processing and complex event processing systems, such as Apache Storm and Software AG’s Apama , have focused on extracting interesting patterns from incoming data with stateless applications.

Process Is No Substitute For Culture

Professor Beekums

I love software process. Process can do wonders for that half. My passion is finding ways to build software faster, but better technology is only half the battle. The other half is a people and organization problem.

Integrate Atlassian Jira and Micro Focus ALM: Defect reporting and resolution is a business process

Tasktop

By integrating Atlassian Jira and Micro Focus ALM, you can automate the flow of defects between the two tools to eradicate manual overhead and accelerate the speed and accuracy of the defect reporting and resolution process. How the long is the process taking?

Maximizing Process Performance with Maze, Uber’s Funnel Visualization Platform

Uber Engineering

At Uber’s scale, even a one percent increase in the rate of sign-ups to first trips (the driver conversion rate) carries a … The post Maximizing Process Performance with Maze, Uber’s Funnel Visualization Platform appeared first on Uber Engineering Blog. At Uber, we spend a considerable amount of resources making the driver sign-up experience as easy as possible.

PostgreSQL Connection Pooling: Part 1 – Pros & Cons

Scalegrid

In that environment, the first PostgreSQL developers decided forking a process for each connection to the database is the safest choice. On modern Linux systems, the difference in overhead between forking a process and creating a thread is much lesser than it used to be.

Hudi: Uber Engineering’s Incremental Processing Framework on Apache Hadoop

Uber Engineering

With the evolution of storage formats like Apache Parquet and Apache ORC and query engines like Presto and Apache Impala , the Hadoop ecosystem has the potential to become a general-purpose, unified serving layer for workloads that can tolerate latencies … The post Hudi: Uber Engineering’s Incremental Processing Framework on Apache Hadoop appeared first on Uber Engineering Blog.

How Tricentis’s Robotic Process Automation (RPA) can accelerate the time to value of your software delivery

Tasktop

The time spent on a repetitive configuration process before completing a purchase order can negatively impact your software product’s time to value.

KeyCDN Launches Image Processing

KeyCDN

We’re thrilled to announce that we’ve added the Image Processing feature! How Does Image Processing Work? The Image Processing feature is available on all Pull Zones. This will improve the image processing performance and decrease the overall cost.

Delta: A Data Synchronization and Enrichment Platform

The Netflix TechBlog

Another thread or process is constantly polling events from the log table and writes them to one or multiple datastores, optionally removing events from the log table after acknowledged by all datastores. Online Event Processing.

SQL Server on Linux: Why Do I Have Two SQL Server Processes

SQL Server According to Bob

When starting SQL Server on Linux why are there two (2) sqlservr processes? The parent process handles basic configuration activities and then forks the child process. The parent process (WATCHDOG) becomes a lightweight monitor and the child process runs the sqlservr.exe process. Hint: Process ids can be reused so do not write scripts looking for the largest process id as the first entry may have a process id larger than the second entry.

Back-to-Basics Weekend Reading - Join Processing in Relational.

All Things Distributed

Back-to-Basics Weekend Reading - Join Processing in Relational Databases. In 1992 Priti Mishra and Margaret Eich conducted a survey on what was achieved until then in Join Processing and described in details the algorithms, the implementation complexity and the performance.

Open Sourcing Mantis: A Platform For Building Cost-Effective, Realtime, Operations-Focused…

The Netflix TechBlog

Where other systems may take over ten minutes to process metrics accurately, Mantis reduces that from tens of minutes down to seconds, effectively reducing our Mean-Time-To-Detect. Instead, we should process and serve events one at a time as they arrive.

One SQL to rule them all: an efficient and syntactically idiomatic approach to management of streams and tables

The Morning Paper

In data processing it seems, all roads eventually lead back to SQL! In particular, we need to take care to separate the event time from the processing time (which could be some arbitrary time later). Uncategorized Datastores Stream processing

SLOG: serializable, low-latency, geo-replicated transactions

The Morning Paper

Strict serializability reduces application code complexity and bugs, since it behaves like a system that is running on a single machine processing transactions sequentially. Key to good intra-region performance is the deterministic nature of the processing.

Managing High Availability in PostgreSQL – Part II

Scalegrid

Kill the PostgreSQL process. Manual intervention was required to start the PostgreSQL process again. Stop the PostgreSQL process. Manual intervention was required to start the PostgreSQL process again. Stop the repmgrd process. Kill the PostgreSQL process. Manual intervention was required to start the PostgreSQL process again. Stop the PostgreSQL process and bring it back immediately after health check expiry. Stop the repmgr process.

European Union Data Protection Authorities Approve Amazon Web Services’ Data Processing Agreement

All Things Distributed

As you all know security, privacy, and protection of our customer’s data is our number one priority and as such we work very closely with regulators to ensure that customers can be assured that they are getting the right protections when processing and storing data in the AWS. The media alert below that went out today gives the details: European Union Data Protection Authorities Approve Amazon Web Services’ Data Processing Agreement.

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MySQL High Availability Framework Explained – Part II: Semisynchronous Replication

Scalegrid

The obvious impact of this is that in the event of a master failure, the slave will not be up-to-date as its SQL thread is still processing the events in the relay log. This will delay the failover process as our framework expects the slave to be fully up-to-date before it can be promoted. To address this issue, we enable multi-threaded slaves with the option slave_parallel_workers to set the number of parallel SQL threads to process events in the relay logs.

Interactive checks for coordination avoidance

The Morning Paper

In fact, the bulk of the paper addresses the underlying theory that makes a decision process possible, and we only get a small hint of what the developer experience might be like in the evaluation. ” Automating more of this process is future work.

A Not-Called Function Can Cause a 5X Slowdown

Randon ASCII

Subtitle: Making Windows Slower Part 3: Process Destruction. Process destruction was slow, serialized, and was blocking the system input queue, leading to repeated short mouse-movement hangs when building Chrome. Every Windows process contains several default GDI object handles.

Digital Twins and Real-Time Digital Twins: What’s the Difference?

ScaleOut Software

In particular, digital twin models can be used to simulate devices and generate telemetry for processing by real-time digital twins. Digital twins are typically used in the field of product life-cycle management (PLM) to model the behavior of individual devices or components within a system.

When Your Profiler Lies

Randon ASCII

Last week I wrote about the performance consequences of inadvertently loading gdi32.dll into processes that are created and destroyed at very high rates. This is the first sign of the performance problems that will happen during process destruction. Process destruction (2.3

IPA: invariant-preserving applications for weakly consistent replicated databases

The Morning Paper

The developer chooses his or her preferred resolution, and the process repeats until no more conflicting operation pairs remain. Uncategorized Datastores Transaction processingIPA: invariant-preserving applications for weakly consistent replicated databases Balegas et al.,

Object-Oriented Programming Simplifies Digital Twins

ScaleOut Software

These are exciting times in the evolution of stream-processing. As we have seen in previous blogs , the digital twin model offers a breakthrough approach to structuring stateful stream-processing applications. It represents a big step forward for building stream-processing applications.

European Union Data Protection Authorities Approve Amazon Web Services’ Data Processing Agreement

All Things Distributed

As you all know security, privacy, and protection of our customer’s data is our number one priority and as such we work very closely with regulators to ensure that customers can be assured that they are getting the right protections when processing and storing data in the AWS. The media alert below that went out today gives the details: European Union Data Protection Authorities Approve Amazon Web Services’ Data Processing Agreement.

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Step-wise Guide to Perform Penetration Testing

QAMentor

Software Testing Test Process & Best PracticesAny software needs to go through various types of tests to assure that it has the required competitive edge.

Digital Twins Enable Seamless Use of Edge Computing in IoT

ScaleOut Software

In previous blogs , we have explored the power of the digital twin model for stateful stream-processing. Digital twins are software abstractions that track the behavior of individual devices in IoT applications. They combine an event handling function with state information about each device.

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Improving the User Experience with Uber’s Customer Obsession Ticket Routing Workflow and Orchestration Engine

Uber Engineering

Architecture Open Source Cadence Customer Obsession Platform Customer Support Natural Language Processing NLP Orchestration Engine Ticket Routing Ticket Routing WorkflowEvery day, Uber users around the world initiate customer support tickets through our Customer Obsession Platform.

Building Reliable Reprocessing and Dead Letter Queues with Apache Kafka

Uber Engineering

Architecture 180 Days of Change Avro Batch Processing Configurability Dead Letter Queues Dead-Lettering DLQs Driver Engineering Driver Injury Protection Program Go Insurance Engineering Kafka Microservice Ning Xia Reliability Reliable Reprocessing SLAs Uber Uber EngineeringIn distributed systems, retries are inevitable.

Introducing AthenaX, Uber Engineering’s Open Source Streaming Analytics Platform

Uber Engineering

Architecture Open Source Analytics Analytics Dashboard Apache Calcite Apache Flink Apache Samza Apache Storm App AthenaX Bill Lui Data Data Analytics Event Stream Processing Haohui Mai Kafka Michelangelo Mobile Naveen Cherukuri OS Restaurant Manager SQL Streaming Analytics Structured Query Language Uber Data UberEATS UberPOOL YARNUber facilitates seamless and more enjoyable user experiences by channeling data from a variety of real-time sources.

Managing High Availability in PostgreSQL – Part III: Patroni

Scalegrid

Kill the PostgreSQL process. Patroni brought the PostgreSQL process back to running state. Stop the PostgreSQL process. Patroni brought the PostgreSQL process back to running state. Once Patroni was started, it started the PostgreSQL process and setup the standby configuration. Stop the Patroni process. It did not stop the PostgreSQL process. Kill the PostgreSQL process. Patroni brought the PostgreSQL process back to running state.

The Future of Performance Testing

Alex Podelko

While there are still quite a lot of cases where it is still applicable, it needs to evolve into more sophisticated processes tightly integrated with development and other parts of performance engineering. Yes, the tools and process should be easier for non-experts to incorporate some performance testing into continuous development process. But then I recalled that installing LoadRunner was a real process – sometimes taking a half day, with a lot of choices to make.

Faster remainders when the divisor is a constant: beating compilers and libdivide

Daniel Lemire

For this test, I am using an Intel (skylake) processing and GCC 8.1. Not all instructions on modern processors cost the same. Additions and subtractions are cheaper than multiplications which are themselves cheaper than divisions. For this reason, compilers frequently replace division instructions by multiplications. Roughly speaking, it works in this manner. Suppose that you want to divide a variable n by a constant d. You have that n/d = n * (2 N / d ) / (2 N ).