AWS

AWS Lambda – constant timeout when using bluebird Promise

Hello! Sorry for the lack of posts recently, it’s been a pretty hectic time here at Yubl, with plenty of exciting work happening and even more on the way. Hopefully I will be able to share with you some of the cool things we have done and valuable lessons we have learnt from working with …

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AWS Lambda – use recursive function to process SQS messages (Part 1)

UPDATE 07/09/2016 : read part 2 on how to elastically scale Lambda function based on no. of messages available in the queue.   It’s been a year since the release of AWS Lambda service and here at Yubl we’re at the start of an exciting journey to move our stack to Lambda (using the awesome Serverless …

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Serverless – enable caching on query string parameters in API Gateway

Since I started working at Yubl less than 2 weeks ago, I have been doing a lot of work with Amazon API Gateway & Lambda with the help of the Serverless framework. So far that experience has been really great. One little caveat I ran into was that, it wasn’t clear on how to enable caching …

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Recording and Slides for F# DSLs talk at F# |> Bristol

Here’s the recorded live stream of the F# DSLs session I did at the F# |> Bristol user group last night. (apologies for the first few mins where I forgot to share my screen to the Hangout…) and here’s the slides to go with the talk: Tame cloud complexity with F#-powered DSLs from Yan Cui

Slides for F# DSL talk at LambdaDays

Hi, thanks to everyone who turned up to my talk at LambdaDays this afternoon, here are the slides. Tame cloud complexity with F#-powered DSLs from Yan Cui   You can find the source code for the projects I discussed below: DynamoDB.SQL : source code & nuget package SimpleWorkflow.Extensions : source code & nuget package CloudWatch.Selector : …

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New releases – DynamoDB.SQL and Darkseid

Hi, just a quick update on two of my libraries aimed at making AWS easier to work with from .Net.   DynamoDB.SQL DynamoDB.SQL is a SQL-like external DSL for querying & scanning data in Amazon DynamoDB. Version 3.0.0 has been released, which moves away from the monolithic .Net AWSSDK (v2.x.x), and onto the DynamoDB specific package. You can …

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Metricano – simplifying application monitoring

On application monitoring In the Gamesys social team, our view on application monitoring is such that anything that runs in production needs to be monitored extensively all the time – every service entry point, IO operations or CPU intensive tasks. Sure, it comes at the cost of a few CPU cycles which might mean that …

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Introducing, DSLs to query against Amazon CloudWatch metrics

If you have done any DevOps work on Amazon Web Services (AWS) then you should be familiar with Amazon CloudWatch, a service for tracking and viewing metrics (CPU, network in/out, etc.) about the various AWS services that you consume, or better still, custom metrics that you publish about your service. On top of that, you …

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Introducing log4net.Kinesis, a log4net appender for Amazon Kinesis

Just under three weeks ago, Amazon announced the public availability of their new Kinesis service, a service which is designed to allow real-time processing of streaming big data. As an experiment I have put together a simple, actor-based customer appender for log4net which allows you to publish your log messages into a configured Kinesis stream. …

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