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NSDictionary *dictionary = @{ @"key1" : @"val1\n", @"key2" : @"val2\n", @"key3" : @"val3\n", @"key4" : @"val4\n", @"key5" : @"val5\n", @"key6" : @"val6\n", }; NSError *error; NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dictionary options:0 error:&error]; if (error) { // noooooooooo! } NSString *json = [[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding];
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Today we launched a mobile website for homeless people … and it was launched by one of Australia’s many recent Prime Ministers Today alone we served up over 87,000 requests As many of you know, I work with Infoxchange as the operations lead. When I first heard the idea of a website or app for people that have found or are worried about finding themselves homeless in Australia I really didn’t think it made sense - until I saw t..
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Today we launched a mobile website for homeless people … and it was launched by one of Australia’s many recent Prime Ministers Today alone we served up over 87,000 requests As many of you know, I work with Infoxchange as the operations lead. When I first heard the idea of a website or app for people that have found or are worried about finding themselves homeless in Australia I really didn’t think it made sense - until I saw t..
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Today we launched a mobile website for homeless people … and it was launched by one of Australia’s many recent Prime Ministers Today alone we served up over 87,000 requests As many of you know, I work with Infoxchange as the operations lead. When I first heard the idea of a website or app for people that have found or are worried about finding themselves homeless in Australia I really didn’t think it made sense - until I saw t..
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Smart suggestions with Django, Elasticsearch and Haystack
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engineering.hackerearth.com
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10 years ago
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eng
Introduction One of the primary issues when gathering information from users is suggesting the right options that they are looking for. At HackerEarth, we gather information from all our developers which help us provide them a better experience. So there came a time when we had to suggest very smartly to our users! :D When humongous amounts of data has to be indexed and suggested intelligently, one of the efficient ways to do it is by us....
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Managing roles and access control in a web application
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engineering.hackerearth.com
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10 years ago
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eng
HackerEarth Recruit , is a platform for technical recruitment. Many companies use this platform for candidate assessments and interviewing. There can be multiple admins for a company account. As teams grow in size, access control is a special concern for applications that deal with financial and privacy data. Access control is concerned with determining the allowed activities of legitimate users, but we required more sophisticated and compl....
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We had implemented a javascript logger to capture the pesky issues our users faced and had problems when using the site. When we came up with the idea, we thought it would be just a five minute job where we would just have to add a snippet and would be done, but as it is well know, nothing is simple when it comes to real world production issues. After analyzing a lot of loggers, we decided to use errorception as our javascript logger. I....
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Whenever we roll out an improvement on our platform, we at HackerEarth love to conduct A/B tests on the improvement to understand which iteration helps our users more in using the platform in a better way. Since the available third party libraries did not quite meet our needs, we wrote our own A/B testing framework in Django. In this post we will share a few insights as to how we accomplished this. The basics A lot of products, especially....
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Today we launched a mobile website for homeless people … and it was launched by one of Australia’s many recent Prime Ministers Today alone we served up over 87,000 requests As many of you know, I work with Infoxchange as the operations lead. When I first heard the idea of a website or app for people that have found or are worried about finding themselves homeless in Australia I really didn’t think it made sense - until I saw t..
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What being a PM is really like - Software is easy, People are hard
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www.craigkerstiens.com
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10 years ago
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eng
In recent months I’ve had the question nearly once a week about advice/tips for becoming a Product Manager or more commonly referred to as PM. These are generally coming from people that are either currently engineers, or previously were and are in some engineer/customer role such as a sales engineer or solution architect. There’s a number of high level pieces talking about PM and it often feels glorious, I mean you get to make product de....
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What being a PM is really like - Software is easy, People are hard
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www.craigkerstiens.com
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10 years ago
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eng
In recent months I’ve had the question nearly once a week about advice/tips for becoming a Product Manager or more commonly referred to as PM. These are generally coming from people that are either currently engineers, or previously were and are in some engineer/customer role such as a sales engineer or solution architect. There’s a number of high level pieces talking about PM and it often feels glorious, I mean you get to make product de....
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This is so cool I can hardly stand it. In Docker 1.10, the awesome libnetwork team added the ability to specify a specific IP for a container. If you want to see the pull request it’s here: docker/docker#19001 . I have a IP Block on OVH for my server with 16 extra public IPs. I totally use these for good and not for evil . But to use these previously with Docker containers meant hackery with the awesome pipework . Or even worse som..
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I’ve been working on a project that uses Fabric and I’m hosting Redis inside the cluster as a simple cache system. One of things that isn’t baked into Fabric is a pub/sub model for communicating between services about events that are occuring. As I’ve got the Redis instance up and running in the cluster I decided to take a look at using the Pub/Sub capabilities in Redis to make this happen. N.B Redis isn’t a guarenteed delivery so use ..
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Update 2021 ] This approach is now very out-dated. I’m working on a project where we’re in need of a cache inside Service Fabric. Now the cache doesn’t need to be durable just nice, quick and easy to use. So I came up with the idea of running a Redis cache inside the cluster as a stateless service fabric service. The problem with this is that when the cluster re-balances the services between nodes I will lose the inmemory data in Redis ..
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Lecture at Ecole Polytechnique: Taking Network Management into the 21st Century
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rob.sh
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10 years ago
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eng
Mark Townsley and Jean-Louis Rougier again invited me to come and lecture at École Polytechnique this year. Their course there focuses on analysing the success of network protocols - using the (fantastic) framework laid out in RFC5218. Given that I’d spoken about SR for the last couple of years in my lecture there, and was giving a (slightly) updated version of the SR lecture at Telecom ParisTech for JLR’s ‘Future Internet’ course earlie..
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Lecture at Ecole Polytechnique: Taking Network Management into the 21st Century
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rob.sh
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10 years ago
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eng
Mark Townsley and Jean-Louis Rougier again invited me to come and lecture at École Polytechnique this year. Their course there focuses on analysing the success of network protocols - using the (fantastic) framework laid out in RFC5218. Given that I’d spoken about SR for the last couple of years in my lecture there, and was giving a (slightly) updated version of the SR lecture at Telecom ParisTech for JLR’s ‘Future Internet’ course earlie..
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THIS IS THE THREAD TO TALK ABOUT THE CURRENT DEATHS OF THE POPULAR, INFLUENTIAL AND IMPORTANT. OR EV...
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I sent this email to the Putty guys, but I haven't heard back from them. So I'll post it here. --------------------------- First of all, thanks for your work on Putty. It's a very useful tool for us. However pscp uploads much more slowly than it should for us. We are uploading from our office network (UK) to a server in a German data centre. Ping latency to the server is ~31ms. Uploading a ~100MB file, putty stabilises at around 2..
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Here are the two BIWA Summit 2016 presentations I delivered today. The first one is a collection of high level thoughts (and opinions) of mine and the 2nd one is more technical: SQL in the Hybrid World from Tanel Poder SQL Monitoring in Oracle Database 12c from Tanel Poder
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Here are the two BIWA Summit 2016 presentations I delivered today. The first one is a collection of high level thoughts (and opinions) of mine and the 2nd one is more technical: SQL in the Hybrid World from Tanel Poder SQL Monitoring in Oracle Database 12c from Tanel Poder
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Six months ago, I wrote on this blog about Geohashes and LevelDB with Go, to create a fast geo database. This post is very similar as it works the same way but replacing GeoHashes with Google S2 library for better performances. There is an S2 Golang implementation maintened by Google not as complete as the C++ one but close. For the storage this post will stay agnostic to avoid any troll, but it applies to any Key Value storages: LevelDB/Ro..
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This Q&A is a total potpourri of everything I’ve gotten in the past month (or three), but I’ve done my best to group them together. Relationships and…Personal Matters Do you have a girlfriend? What does she think of your lifestyle? I don’t have a girlfriend at the moment, so her opinions are nonexistent. If I were to have a girlfriend, I’d like to think that she’d be (at the very least) accepting of my choices. I’m pret..
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This Q&A is a total potpourri of everything I’ve gotten in the past month (or three), but I’ve done my best to group them together. Relationships and…Personal Matters Do you have a girlfriend? What does she think of your lifestyle? I don’t have a girlfriend at the moment, so her opinions are nonexistent. If I were to have a girlfriend, I’d like to think that she’d be (at the very least) accepting of my choices. I’m pret..
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Icons are essential to most pattern libraries and web design systems. Let's take a look at a scalable approach!
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High Level Problem Our Dynamic Ads product is designed to show a user ads with specific, recommended products based on their browsing history. Each advertiser gives us a list of all of its products beforehand so that we can generate a “product catalog” for the advertiser. Sometimes, however, the product catalog that the advertiser has given us may not accurately reflect all of the products that exist on their website, and our recommendatio....
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Everyday at work around noon the question of where to get lunch comes up. Normally, we choose between different restataurants in the vicinity of the office. One exception is the HU Mensa (university cafeteria). Despite being really cheap the food quality there varies a lot and it really depends on the daily menu whether a visit is worthwhile. To tackle this issue I decided to spent another IT Open Space putting together a little script that..
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Yes Step into a Viennese blast from the past. Beautiful setting and pleasant vibe. Ordered a dirty martini on the rocks, a bottle of Merlot, Käsespätzle (with bacon), and Wiener Schnitzel (with anchovy/capers/egg). All very tasty. But… Surprisingly, desserts (Topfenstrudel, Berggasse and coffee) were nothing spectacular. Also not a cheap eat (£50 per person). Photos
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Image decoding can be a source of checkboarding and jank. What if there was a way to work around it without resorting to a cluster of horror hacks? Step right up and meet my new friend createImageBitmap!
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Image decoding can be a source of checkboarding and jank. What if there was a way to work around it without resorting to a cluster of horror hacks? Step right up and meet my new friend createImageBitmap!
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