Welcome!

PHP Authors: Liz McMillan, Carmen Gonzalez, Hovhannes Avoyan, Lori MacVittie, Trevor Parsons

RSS Feed Item

Amazon SimpleDb

I’ve recently been working on some top secret stuff which has the requirement of scaling to a large data set with a lot of simultaneous requests.

This problem has made me a convert to the AmazonWebServices framework, which lets me run my applications on a big old server farm, over a remote API without having to talk to anyone – which is convenient if you live on the other side of the world.

I was just approved to use the Amazon SimpleDb beta, and I have to say it makes me rethink the word database. It doesn’t do anything I take for granted from even the simplest of dbs:

  • It doesn’t support sorting: rows come in whatever order
  • No text search
  • Values can only be 1mb in size
  • No auto-incrementing ids
  • No consistency – values could be 2 different things simultaneously – ‘eventual consistency’
  • No types – no negatives, no integers, no dates, just strings.
  • No way to get multiple rows of data back – each item must be individually fetched.
  • High failure rate: queries often fail due to ‘internal error’ at Amazon
  • Queries cannot exceed 5 seconds
  • No schema
  • No joins – or functions

Those are the downsides. The positives are: I don’t have to run and optimize my own database, no need for a dedicated database box, scaling and indexing are free, running hardware is free, no cost when not active, and it’s fast and cheap (more testing needed on that though). You can also easily have multiple values for a single attribute, which is a bit trickier in a real database.

Really, I don’t think they should have called this ‘DB’ at all. Maybe AmazonDistributedHashTable++ would be better.

Anyways, I hope their infrastructure is run better than their documentation and developer support, because that is also a major negative. First, their API is appallingly bad – and completely different from their StorageAPI for some reason. The “REST” API tunnels all queries through a GET string with a billion parameters. It’s bad, bad practice.

Second, they don’t have a simple php practice library to go along with their simple service. The php library they do have is way too complicated – while the service only has 7 simple methods – the library requires 27 php files with thousands of lines of code to implement them.

Sure, they probably wanted to do a nice reference implementation that included support for all the features and did really good error handling or something – but it’s just scary and evil for something that’s supposed to be simple. At least it makes an attempt to be PHP5.

I wrote a replacement php library for playing around with the service. It’s missing some big optional components of the API like tokens and it doesn’t deal with retries, etc – but if you just want to try out SimpleDb and you use PHP, you can grab my really simple simpledb script – it’s 250 or so lines compared to their 27 file 5000 or so lines reference implementation. (you must have Crypt/HMAC and Curl however)

Read the original blog entry...

IoT & Smart Cities Stories
Moroccanoil®, the global leader in oil-infused beauty, is thrilled to announce the NEW Moroccanoil Color Depositing Masks, a collection of dual-benefit hair masks that deposit pure pigments while providing the treatment benefits of a deep conditioning mask. The collection consists of seven curated shades for commitment-free, beautifully-colored hair that looks and feels healthy.
The textured-hair category is inarguably the hottest in the haircare space today. This has been driven by the proliferation of founder brands started by curly and coily consumers and savvy consumers who increasingly want products specifically for their texture type. This trend is underscored by the latest insights from NaturallyCurly's 2018 TextureTrends report, released today. According to the 2018 TextureTrends Report, more than 80 percent of women with curly and coily hair say they purcha...
The textured-hair category is inarguably the hottest in the haircare space today. This has been driven by the proliferation of founder brands started by curly and coily consumers and savvy consumers who increasingly want products specifically for their texture type. This trend is underscored by the latest insights from NaturallyCurly's 2018 TextureTrends report, released today. According to the 2018 TextureTrends Report, more than 80 percent of women with curly and coily hair say they purcha...
We all love the many benefits of natural plant oils, used as a deap treatment before shampooing, at home or at the beach, but is there an all-in-one solution for everyday intensive nutrition and modern styling?I am passionate about the benefits of natural extracts with tried-and-tested results, which I have used to develop my own brand (lemon for its acid ph, wheat germ for its fortifying action…). I wanted a product which combined caring and styling effects, and which could be used after shampo...
The platform combines the strengths of Singtel's extensive, intelligent network capabilities with Microsoft's cloud expertise to create a unique solution that sets new standards for IoT applications," said Mr Diomedes Kastanis, Head of IoT at Singtel. "Our solution provides speed, transparency and flexibility, paving the way for a more pervasive use of IoT to accelerate enterprises' digitalisation efforts. AI-powered intelligent connectivity over Microsoft Azure will be the fastest connected pat...
There are many examples of disruption in consumer space – Uber disrupting the cab industry, Airbnb disrupting the hospitality industry and so on; but have you wondered who is disrupting support and operations? AISERA helps make businesses and customers successful by offering consumer-like user experience for support and operations. We have built the world’s first AI-driven IT / HR / Cloud / Customer Support and Operations solution.
Codete accelerates their clients growth through technological expertise and experience. Codite team works with organizations to meet the challenges that digitalization presents. Their clients include digital start-ups as well as established enterprises in the IT industry. To stay competitive in a highly innovative IT industry, strong R&D departments and bold spin-off initiatives is a must. Codete Data Science and Software Architects teams help corporate clients to stay up to date with the mod...
At CloudEXPO Silicon Valley, June 24-26, 2019, Digital Transformation (DX) is a major focus with expanded DevOpsSUMMIT and FinTechEXPO programs within the DXWorldEXPO agenda. Successful transformation requires a laser focus on being data-driven and on using all the tools available that enable transformation if they plan to survive over the long term. A total of 88% of Fortune 500 companies from a generation ago are now out of business. Only 12% still survive. Similar percentages are found throug...
Druva is the global leader in Cloud Data Protection and Management, delivering the industry's first data management-as-a-service solution that aggregates data from endpoints, servers and cloud applications and leverages the public cloud to offer a single pane of glass to enable data protection, governance and intelligence-dramatically increasing the availability and visibility of business critical information, while reducing the risk, cost and complexity of managing and protecting it. Druva's...
BMC has unmatched experience in IT management, supporting 92 of the Forbes Global 100, and earning recognition as an ITSM Gartner Magic Quadrant Leader for five years running. Our solutions offer speed, agility, and efficiency to tackle business challenges in the areas of service management, automation, operations, and the mainframe.