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    44 jobs found, pricing in USD

    We are building a big social network for europe market. Our backend architecture is microservices. We decided to use these technologies for our project: + web front-end: Nodejs and AngularJS (and html5,css3 ) +back-end: Nodejs to build restful APIs, python for data collecting and processing, Java for some heavy tasks. Database: PostgreSQL, Redis, Cassandra and ArangoDB. API gateway: Kong, Message Broker: Kafka. http cache: Varnish, Load balancer: HAProxy. +Protocols: Rest via http, Websocket. We need a good team in Vietnam (Ho Chi Minh city) or India can do whole project or a part of project for us. The team must have at least 2-3 senior nodejs developers and 1-2 senior python developers and 1 software architect. The budget for this project is from 40000$-70000$.

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    I am developing an IoT solution for which i am expecting large data from edge devices to the cloud. looking for a freelancer to help me in: - writing requirements - designing solution - implementation - integration with Azure/AWS Cloud and other pieces of the solution - ongoing support for: - managing data streaming from edge (Kafka and probably spark/akka) that include connector/producer/consumer functionalities - storing the data in NoSQL (Cassandra) - analyzing and visualizing the data (Hadoop) SCOPE: Your scope of work start from the point the data leaves the edge network. - Receiving the data stream (NiFi or Kafka Connector) - collecting/consuming the data stream in Kafka (Kafka, Spark) - Storing the Data in NoSQL DB (Cassandra) - Analyzing and visualizing the data (Hadoop or its alternative) Need your help in starting from writing "specifications" to "GoLive" to "Ongoing Support". I already have: One engineer taking care of Firmware for Edge. One engineer taking care of APIs. One engineer taking care of Mobile App and Website. You will be interacting with these engineers during project execution. Please find below my project schedule: 1. Requirements Phase: Duration 1 month: Expecting at least 10 hours of time per week Tasks: Documenting specifications, tools/platforms/framework to be used, all interfaces defined 2. Design Phase: Duration 1 month: Expecting ate least 10 hours of your time every week Tasks: Documenting Low Level Design/architecture, APIs to be used at all interfaces, Data Modeling/Analysis/Visualization defined 3. Implementation/Integration Phase: Duration 2 months: Expecting ate least 10 hours of your time every week Tasks: Coding, Implementation, Configuring, Provisioning, Integration (as applicable) 4. Testing, Automation, Stabilization, Fixing all bugs Duration 1 month: Expecting ate least 10 hours of your time every week Tasks: Fixing all bugs, identifying any last minute gap based on my feedback or performance and implementing those 5. Cloud Hosting/Integration/GoLive Duration 1 month: Expecting ate least 10 hours of your time every week Tasks: Continue fixing bugs, GoLive on one of the cloud hosting environment (Azure or AWS) 6. Ongoing Support for 6 months after GoLive that does not include new feature Duration 6 month: Expecting at least 4 hours of your time every week Tasks: bug fixing, questions and answers on any code/document/design aspect of your part of code, documentation update if needed

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    NoSql Library (Java Project) 6 days left
    VERIFIED

    The aim of this work is to develop a reusable software library which will implement key access operators to some (> 1) NoSQL data storage systems. The library aims to make it easier for developers to use a NoSQL storage system, concealing details of the system, and providing a simple programming interface (application programming interface).

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    I am developing an IoT solution for which i am expecting large data from edge devices to the cloud. looking for a freelancer to help me in: - writing requirements - designing solution - implementaton - integration with Google Cloud and other pieces of the solution for: - managing data streaming from edge (Kafka and probably spark/akka) that include connector/producer/consumer functionalities - storing the data in NoSQL (Cassandra) - analyzing and visualizing the data (Hadoop) Apart from pricing, if you can share an approach and thoughtful timeline, that will help me in decision making.

    $447 (Avg Bid)
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    trying to retrive the data from the AWS snapshots and facing issues.. cassandra expert to fix an issue

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    Here is the error: ERROR 16:44:36 Exception in thread Thread[CompactionExecutor:2,1,main] [login to view URL]: Unable to compute ceiling for max when histogram overflowed at [login to view URL]([login to view URL]) -[[login to view URL]:3.0.9] at [login to view URL]([login to view URL]) -[[login to view URL]:3.0.9] at [login to view URL]([login to view URL]) -[[login to view URL]:3.0.9] at [login to view URL]([login to view URL]) -[[login to view URL]:3.0.9] at [login to view URL]([login to view URL]) -[[login to view URL]:3.0.9] at [login to view URL]([login to view URL]) -[[login to view URL]:3.0.9] at [login to view URL]([login to view URL]) -[[login to view URL]:3.0.9] at [login to view URL]([login to view URL]) -[[login to view URL]:3.0.9] at [login to view URL]$[login to view URL]([login to view URL]) -[[login to view URL]:3.0.9] at [login to view URL]$[login to view URL]([login to view URL]) -[na:1.8.0_171] at [login to view URL]([login to view URL]) -[na:1.8.0_171] at [login to view URL]([login to view URL]) -[na:1.8.0_171] at [login to view URL]$[login to view URL]([login to view URL]) [na:1.8.0_171] at [login to view URL]([login to view URL]) [na:1.8.0_171]

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    My Project would typically involve developing an API in Java, that will query data from Hive, perform validation on them based on the feed from Cassandra. After the validation are done, should add the data to a new Cassandra table and publish an event. Apart from the above project, would require you to help in bug fixes for a different Java Project.

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    I have two diffrentes queries. I need UNION the two queries, but in cassandra.

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    Building website with salient but the short code pages arent loading correctly. The login pages and contact forms only show partially.

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    I need to transfer my HSQLDB Database to Cassandra for Thingsboard IoT Platform.

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    I have a web site and have question about nginx file

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    We have an app that collects data from a users body. Some data has 10 readings per second while other have only one reading every 10 or 30 seconds. There are approximately 15 values being measured during a test. Each test can last from 10 seconds to hours of data being collected. There is also data about each user such as their weight, height, body type, medical conditions etc.. Additionally each session will have information about their state such as activity level, stress level, energy level. The information will be sent from our app to our server. You need to also create an api or have one created to receive information from the phone and send to the phone app if necessary as well as for their login and password. We are expecting a lot of users so we want to start with an architecture designed for high volume. Additionally we want to analyze all of the data in many ways in individual accounts as well as across all accounts to find useful patterns. The main part of this project is to: 1) Create the user interface 2) Allow people to see a list of each of their sessions 3) Click within each session to explore the data. There will be about 6 graphs and other data related to their session. I'm thinking of something like Hadoop or Cassandra will be the best but I'm open to suggestions. Something that will scale with us as our userbase and data increases.

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    Need custom authentication with spring boot 2 webflux reactive using neo4j for user/userDetails persistence and session store handled by cassandra. Make number of session per user customizable - No realm (Authentication should be handled by ReactiveAuthenticationManager accessible by using a call post rest login) - Only one rest controller that have a request mapping that allow only authenticated user

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    Tenemos una consola que obtiene registros desde mongodb , cada registro tiene un peso entre 5k a 20kb, y el maximo de registros es de 1.5 millones, una vez que lo tenemos en memoria, procesamos estos registos con algunass condiciones de "contains", "remove", comando de cadenas, y finalmente lo escribimos en un archivo txt. Este proceso actualmente demora 5 horas, y necesitamos reducirlo a 1 hora, la tecnologia que utilizamos es: c#, .net framework 4.5,mongodb 3.4. Necesitamos una solucion con personas que hayan tenido experiencias de gran procesamiento de datos, abstenerse personas que no tengan esta experiencia.

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    We're developing our first project with Cassandra, and we require an expert to be available to answer our questions as they arise. The expert must have experience with Cassandra using the PHP driver.

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    I need a project on sentiment analysis for tweets using spark and scala. USE spark streaming to gets live tweets and NLP library for analysis KIBANA for visualization. This is my basic requirement cost may vary depending the way you give me an output. Beyond all this I already have a project with full source code If you make it to work with no errors i will pay the half amount that which is giving for new source code.

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    Need someone to help with a big data project (Design using Lambda Architecture)

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    The project contains the following activities: - Read streaming data from API with Kafka and Spark (Apache) - Create DB model in Cassandra - Store data in cassandra engine

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    Need a developer with experience in Apache Cassandra & Apache Solr to help design the schema for both Cassandra & Solr to maximize performance. We are planning to move most of our data from our current SQL database to Cassandra and Solr will be used for the complex searches we will need within our app and the actual data will be retrieved from Cassandra. Moreover, if we like the developers performance and they are experienced in ASP.NET Core as well, we will consider hiring them for the app development as well.

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    Lead the cassandra dba project

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