Some Curiosities of Oracle Error Codes


A blog post about Oracle error codes? If you doubt that this might be possible or of interest, then answer these two questions: database performance oracle code database performance error pl/sql code errorCuriosities about them, even?

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Towards multiverse databases

The Morning Paper

Towards multiverse databases Marzoev et al., Therefore, frontend code is responsible for permission checks and privacy-preserving transformations that protect user’s data. The central idea behind multiverse databases is to push the data access and privacy rules into the database itself.

SQL Clone for Unit Testing Databases


Sometimes, when you are performing unit or integration tests whilst developing code, you need to be able to do something extreme, such as mangling a test database or two, repeatedly, each time subsequently restoring it to its original state before running the next test. database performance sql testing unit testing clone

Updating graph databases with Cypher

The Morning Paper

Updating graph databases with Cypher Green et al., Our understanding of updates in the popular graph database model… is still very rudimentary. Violations of atomicity and non-deterministic update behaviour certainly don’t sound like the kind of things you want in a database!!

2019 Open Source Database Report: Top Databases, Public Cloud vs. On-Premise, Polyglot Persistence


Ready to transition from a commercial database to open source, and want to know which databases are most popular in 2019? Wondering whether an on-premise vs. public cloud vs. hybrid cloud infrastructure is best for your database strategy? Or, considering adding a new database to your application and want to see which combinations are most popular? Polyglot Persistence Trends : Number of Databases Used & Top Combinations. 2019 Top Databases Used.

View-centric performance optimization for database-backed web applications

The Morning Paper

View-centric performance optimization for database-backed web applications Yang et al., A web page instrumented by Panorama looks like this: Parts of the page are colour-coded heat-map style to indicate how costly they were to generate. you are doing the count in the database, right?).

Sending SentryOne Data to the Azure SQL Database DTU Calculator

SQL Performance

If so, you may have heard about the Azure SQL Database DTU calculator , and you may have also read about how it has been reverse engineered by Andy Mallon. Database – Log Bytes Flushed/sec. I created a table called [AzureDatabaseDTUData] and stored it in the SentryOne database.

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PyMongo Tutorial: Testing MongoDB Failover in Your Python App


It comes as no surprise that Python developers commonly leverage MongoDB hosting , the most popular NoSQL database , for their deployments due to its flexible nature and lack of schema requirements. It is a fairly mature driver that supports most of the common operations with the database, and you can check out this tutorial for an introduction to the PyMongo driver. It is also recommended that SSL connections be enabled to encrypt the client-database traffic.

Which Is the Best PostgreSQL GUI? 2019 Comparison


PostgreSQL graphical user interface (GUI) tools help these open source database users to manage, manipulate, and visualize their data. PostgreSQL is the fourth most popular database management system in the world, and heavily used in all sizes of applications from small to large.

Key Considerations for a Modern Database to Operate at Scale


When your business latency or API latency expectation is larger than the baked in latency, you have room for coding cleverness to try to do something really quick. The post Key Considerations for a Modern Database to Operate at Scale appeared first on VoltDB.

How to add your database to HammerDB – Pt4 Commit changes and pull request


In parts 1 to 3 of this series we have gone through the steps of taking the HammerDB code and adding support for a new database. If you think you are ready for the changes for your additional database to be included in HammerDB then you should open a pull request.

How to add your database to HammerDB – Pt3 Adding to and modifying the source


The next step is to see if there is an Issue already created for the database we want to add or whether we should create one. In this example using MariaDB there is already an Issue created Add MariaDB as a separate database #54 although note that this can be for any database you choose.

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How to add you database to HammerDB – Pt2 Fork, clone and binary downloads


As noted in the previous post to add a database to HammerDB you will need to change the source code. Under the working directory we know have the HammerDB source code in which to add the new database.

How to add your database to HammerDB – Pt1 Opening an issue


A very common request is for HammerDB to add support for a new database. Before reaching out with a request your first reference should be the DB-Engines Ranking to gauge the relative popularity of a database. it is no coincidence that HammerDB supports the most popular databases with all of the databases currently supported being in the top 10 of this ranking. The source code for this interface is here and all intefaces used are open source and GPL compliant.

PostgreSQL Trends: Most Popular Cloud Providers, Languages, VACUUM, Query Management Strategies & Deployment Types in Enterprise


As this open source database continues to pull new users from expensive commercial database management systems like Oracle, DB2 and SQL Server, organizations are adopting new approaches and evolving their own to maintain the exceptional performance of their SQL deployments. We recently attended the PostgresConf event in San Jose to hear from the most active PostgreSQL user base on their database management strategies.

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Smart Bundling: How To Serve Legacy Code Only To Legacy Browsers

Smashing Magazine

Smart Bundling: How To Serve Legacy Code Only To Legacy Browsers. Smart Bundling: How To Serve Legacy Code Only To Legacy Browsers. A Practical Guide To Shipping Efficient Code. Shubham Kanodia. 2018-10-15T14:30:13+02:00. 2019-04-29T18:34:58+00:00.

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A one size fits all database doesn't fit anyone

All Things Distributed

A common question that I get is why do we offer so many database products? To do this, they need to be able to use multiple databases and data models within the same application. Seldom can one database fit the needs of multiple distinct use cases. The days of the one-size-fits-all monolithic database are behind us, and developers are now building highly distributed applications using a multitude of purpose-built databases. Purpose-built databases.

How to Optimize Digital Experience and Operations with Dynatrace


Infrastructure Optimization: 100% improvement in Database Connectivity. Think of a user login which requires your back-end systems to validate user credentials and query required user profile information from the backend databases. Dynatrace news.

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Intro to Redis Cluster Sharding – Advantages, Limitations, Deploying & Client Connections


Only Supports One Database. Unlike standalone databases, Redis Clusters support only one database (database 0), and the SELECT command isn’t allowed. Since most people don’t use multiple databases, this too is not a major limitation.

What’s the Best PostgreSQL High Availability Framework? PAF vs. repmgr vs. Patroni Infographic


If you need help setting up high availability for your PostgreSQL clusters, check out our fully Managed PostgreSQL on AWS , PostgreSQL on Azure , and PostgreSQL Enterprise solutions to automate your database management in the cloud an on-premise. Embed This Image On Your Site (copy code below): Courtesy of: ScaleGrid. Wondering which high availability framework to use for your PostgreSQL deployments ?

Connecting MongoDB to Ruby with Self-Signed Certificates for SSL


To keep the example simple, we have specified the connection string and the cert file path directly in the code snippet – you would generally either put them in a yaml file or specify them as environment variables. Our yml file: development: # Configure available database clients. Alternatively, you can define the following: # # Define the name of the default database that Mongoid can connect to. # (required). The user's database roles.

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The Marvel of Observability


That means the system exposes telemetry, which is the data emitted from instrumentation that expresses those external behaviors — a feature ideally baked into your code upfront. database devops performance monitoring performance monitoring observabilityMarvel at this article!

Titan Graph Database Integration with DynamoDB: World-class Performance, Availability, and Scale for New Workloads

All Things Distributed

It opens up the possibility to enjoy the value that graph databases bring to relationship-centric use cases, without worrying about managing the underlying storage. Traditionally, these connections have been stored in relational databases, with each object type requiring its own table.

Embrace event-driven computing: Amazon expands DynamoDB with streams, cross-region replication, and database triggers

All Things Distributed

I am excited to share with you that today we are expanding DynamoDB with streams, cross-region replication, and database triggers. In traditional database architectures, database engines often run a small search engine or data warehouse engines on the same hardware as the database.

Client-side Performance Monitoring with InfluxDB

Wayfair Tech

Each day we deploy hundreds of code changes to the web application for our customer-facing websites, and each change has the potential to impact performance for better or worse. Database Open Source Tools Web Performance databases InfluxDB kafka monitoring real user monitoring time seriesAccurate performance monitoring is crucial for Wayfair’s Storefront Engineering team.

Which is the Best MongoDB GUI? — 2019 Update


In this article, we are going to compare 6 of the top MongoDB Graphical User Interfaces that help developers increase their productivity and manage their database. It’s further enhanced by an in-place code editor which is also available in all three views.

5 Steps to Accelerate your Cloud Migration with Dynatrace


There is no code or configuration change necessary to capture data and detect existing services. Database & functional migration. Step 4: Smart Database Migration. Which applications and services are depending on a database that might be impacted by a migration?

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Tune Linux Kernel Parameters For PostgreSQL Optimization


For optimum performance, a PostgreSQL database depends on the operating system parameters being defined correctly. Poorly configured OS kernel parameters can cause degradation in database server performance. Let’s now try to add some data into the database.

From monitoring to software intelligence for Flask applications


When comparing Django and Flask , developers like to highlight that Django provides an all-inclusive experience for developers: you get an admin panel, database interfaces, ORM, and directory structure for your applications and projects out of the box. Tracing database requests.

Monitor and Optimize Slow Queries with PMM and EverSQL – Part 2


EverSQL (use code PERCONA-EVERSQL-10OFF for a 10% discount on the first billing cycle) is a platform that intelligently tunes your SQL queries by providing query optimization recommendations, and feedback on missing indexes.

Introducing the Dynatrace SAP ABAP platform monitoring extension (EAP)


No ABAP code instrumentation or injection is performed. Response time of the server, overall and split by the various task types that the server performs, like serving interactive GUI users, machine-to-machine RFC calls, print jobs, and background database updates. Dynatrace news.

Time to First Byte: What It Is and Why It Matters

CSS Wizardry

Application runtime: It’s kind of obvious really, but the time it takes to run your actual application code is going to be a large contributor to your TTFB. Database queries: Pages that require data from a database will incur a cost when searching over it.

Java Or Scala Performance – Which One Is Better?

Alex Podelko

The Size and Quality of the Code. If you decide to use Java to write your programs with, be prepared to write longer lines of code to accomplish even the smallest tasks. Being able to fit more on a page allows you to easily organize your code with Scala.

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Write Maintainable Integration Tests with Docker


These days, it is commonplace to use MyS QL, Redis as a key-value store, MongoDB, Postgress, and InfluxDB — and that is all just for the database — let alone the multiple services that make up other parts of the application.

NoSQL Data Modeling Techniques

Highly Scalable

NoSQL databases are often compared by various non-functional criteria, such as scalability, performance, and consistency. At the same time, NoSQL data modeling is not so well studied and lacks the systematic theory found in relational databases. Document Databases: MongoDB, CouchDB.

Resolve performance incidents faster with Dynatrace Real User Monitoring for SAP GUI (Preview)


We do this by reporting on every T-code execution of every SAP user (SAP T-code, or transaction code, is a shortcut key that provides direct access to the desired transaction from anywhere within the SAP system). Dynatrace news.

Improved PHP monitoring with even less overhead!


Dynatrace has long provided automatic code-level performance monitoring for PHP applications with OneAgent. Overhead is reduced for PHP code of all complexity, as shown by these simple PHP executions. The lower brown line indicates current performance for PHP test code.

How to fine tune failure detection


Automatic failure detection works well in most cases especially for web services and when developers follow good coding practices. It is basically an exception which the code doesn’t expect to occur and therefore doesn’t deal with. Code. …. }. What about HTTP error codes?

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Fostering a Web Performance Culture

José M. Pérez

There was something gratifying in taking a code that takes minutes to run and make it run in a handful seconds. Normally the team decides how well to cover and test the code, and it’s important that all developers in a team know how to write tests.

Get automated full-stack visibility into containerd-based Kubernetes environments


Dynatrace is the first and only solution to provide full-stack visibility into containerized workloads with zero changes required to your code or deployments. Automatic code level visibility and tracing of applications in containerd containers. Dynatrace news. Docker, Inc.

Optimizing Microsoft Workload on AWS with Dynatrace Davis


No additional code or configuration change is necessary! 2: Finding and fixing problematic code or configuration changes optimizes resource consumption as we have seen in the previous example. Are all services connecting to the correct backend services or databases?

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Infrastructure soup

Particular Software

Just like with chili, we sometimes see code that feels kind of "thick and chunky." " It's got validation, logging, exception handling, database communication, business logic, and so much more. Single responsiblity That code had a lot going on.

Stuff The Internet Says On Scalability For October 5th, 2018

High Scalability

What made me change was a combination of reading the SQLite and Redis codebases" <3 false myth: code should be auto-explaining. Comments tell you about the state, not the code. Hey, wake up! It's HighScalability time: Halloween is early.