Daily active users, also known as DAU, is the number of unique users that have interacted with a website or application in a given day. We’re going to discuss how to track this metric, in a language agnostic fashion. The concepts discussed and Redis commands utilized can be implemented in
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Redis is one of my favorite data stores. The multitude of data types makes it flexible enough to serve as a simple caching layer (replacing Memcached) or as a full-blown RDBMS replacement if you’re willing to jump through a few hoops. Because Redis is an in-memory data store, it’s limited
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One of the great features of MongoDB is the ability to store an array in a document. While I’m fully aware that there are issues with storing unbounded arrays in MongoDB, due to document size limitations, there are times when you may want to store data in an array that
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Even though I’ve been using MongoDB for the last few years, I’m still very much a noob when it comes to a lot of things. One of those things would be unique indexes. Generally speak, I interact with MongoDB three different ways: I write code that explicitly creates something with
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We love open source software here at CrowdSync. Sometimes though, we run into issues with the software we’ve deemed as the “right” package for us. A recent incident has been with React Draft Wysiwyg which we decided to use as part of our action to compose and send emails to
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Ran into a scenario this weekend where I needed to take a sub-document from Mongo but I needed it in an array in PHP. Reading the data from Mongo with PHP was simple and won’t be discussed. What I’d like to talk about is taking the BSONDocument that Mongo returns
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This probably isn’t the best way to track things, but it’s the best I came up with. Tracking the total number of users that log in per day or month is trivial as I have discussed in a previous post. To track the peak users online at a given time
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Recently I was building a piece of functionality to track the daily and monthly active users on one of my sites. I already track this data in MySQL but retrieving the data was sluggish, even after creating a few new indexes, so I decided that I would use Redis. The
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I came to a very liberating conclusion the other day. I need to stop fucking around with MySQL, or any other RDBMS, and fully embrace a NoSQL server as my primary data store. I’ve been a huge fan of Redis for quite some time but the fact that everything lives
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I’ve previously discussed installing the MongoDB module but have yet to touch on how to actually do anything past the install. The first thing to do is to connect to the MongoDB server. This can simply be done like this: $client = new MongoClient(); This will connect to the default
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Have you ever run into a scenario where you have to loop through a set of data and perform database queries for each iteration? Obviously we shouldn’t run them one by one, so we end up using a TRANSACTION or even just building out one large query in the case
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Previously, I had shown you how to install PHP Redis from source but things changed with the latest Ubuntu LTS release. Now you can install the phpredis extension from the Ubuntu respositories. First, if you don’t have it installed already, let’s install Redis: sudo apt-get install redis-server After we get
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Installing the PHP module for MongoDB on Ubuntu 14.04 LTS is just a command away, but first, let’s ensure that we have MongoDB itself installed: sudo apt-get install mongodb Once we have MongoDB installed, we can proceed with installing the module. Please note that you could combine these commands to
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If you know me then you know I fucking adore Redis. Over the last few years it’s slowly worked it’s way into the majority of the things I have built. Unfortunately, recently I ran into a problem that Redis could easily accomplish but would require more RAM than I have
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Score another one for HitTail as this particular topic was their suggestion. MySQL (PostgreSQL, SQL Server, SQLite or any other RDBMS I didn’t list) and Redis are completely different beasts in regard to syntax and especially schema design (or lack there of). The following are just some common SQL statements
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One of biggest draws to Redis for me is the fact that it has more data structure types than just key / value. These additional data structures allow you to do some amazing things while still benefitting from being in-memory. One of the most notable ways to leverage Redis would
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In a previous post I’ve talked about installing phpredis a PHP Extension for Redis that has to be compiled from source. But what if you’re hosting scenario doesn’t allow you to compile extensions? Well you’re in luck, in addition to the extension, there are additional client libraries out there for
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Installing the Memcached module for PHP on Ubuntu 12.04 LTS is as simple as can be. First let’s make sure we have Memcached installed: sudo apt-get install memcached On Ubuntu, the process to install the PHP module is similar to how we installed Memcached itself: sudo apt-get install php5-memcache php5-memcached
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Redis is one of my favorite key-value stores, the range of data types alone make it a must have in any developer”s tool belt. Another great use for Redis is as your session handler in PHP. The optional persistence that Redis provides makes it a better option than using Memcached
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Memcached makes a semi-perfect solution for storing your PHP sessions. Why only semi-perfect? Well in Memcached’s defense, the fact that it is an in-memory data store makes it a great choice because of the speed. The negative is the lack of persistence, which makes it somewhat less desirable. What this
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Redis is one of my favorite new data stores of the NoSQL movement. It has the power and speed to act as a caching server like Memcached and it has more advanced data types to make it more like an RDBMS. Before we can talk about using Redis as a
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Sessions, one of those necessary evils when building websites. They come into play whenever you need to have data available between pages on a site. These scenarios typically arise when you have login restricted areas on a site. Why do I refer to them as evil? Quite a few reasons
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If you know me you know that I’m a huge proponent of Redis. I started using it in mid-2011 as the storage engine for a chat system I was building for SceneKids. Over the last year and a half or so I’ve utilized Redis more and more for many other
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