Building a horizontally scalable API in php
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Building a horizontally scalable API in php
- 1. Building a horizontally scalable API in PHP yada...yada...title was really too long wasn’t it?
- 2. Presumptions
- 3. Working with MySQL 5.1 + InnoDBPlugin or 5.5 Binary hashes Learn the configuration options Separation of data logically (e.g. user data vs. analytical data)
- 4. CouchDB CouchDB, Couchbase, BigCouch... Stale views Natural keys Document update handlers Design doc modification = rebuild
- 5. Example update function function (doc, req) { try { varobj = eval('(' + req.body + ')'); } catch (err) { return [null, { headers: { 'X-Status-Code': '400' }, body: 'Invalid JSON' }]; } if (!doc) { if (!obj.url) return [null, { headers: { 'X-Status-Code': '422' }, body: 'No URL' }]; doc = { _id: req.path[5], url: obj.url, statistics: [] }; } if (obj.url) delete obj.url; doc.statistics.push(obj); return [doc, 'OK']; }
- 6. Caching Varnish Membase (distributed Memcache) Op code caching (disable file check)
- 7. Zend Framework Does have a REST Controller (albeit pants, but it’s a starting point) – and we don’t call it Rest, we just call it an API Extend the controller as your base GET/PUT/POST/DELETE/HEAD/OPTIONS on the extension Reflection allows automatic use of Allow header OPTIONS can parse doc block for automation (@property) A global error controller is great for centralised management of errors. Re-use modules – you’ve got an API you can use.
- 8. Example of implemented Methods public function implementedMethods() { if(!isset($this->_actionController)) return array(); $class = get_class($this->_actionController); $oReflector = new ReflectionClass($class); $methods = $oReflector->getMethods(ReflectionMethod::IS_PUBLIC); $implementedMethods = array(); foreach($methods as $i => $method) /* @var $method ReflectionMethod */ { if($method->getDeclaringClass()->getName() == $class) $implementedMethods[] = str_replace('Action', '', $method->getName()); } return array_intersect($implementedMethods, array('get', 'put', 'post', 'delete', 'head', 'options', 'trace')); }
- 9. PHP Requests using date ranges – break down using DateInterval then cache fopen(‘php://input’, ‘r’) for PUT data. Exception($message, $code, $previous) text/uri-list
- 10. Building SSH keys CI tool (Hudson/Jenkins) for testing and uploading Lots of boxes = distribution server
- 11. Testing (Stress) Apache JMeter is a great java GUI/CLI tool for both testing requests and stress testing API’s should inherently allow independent testing of minimal components at the user request level
- 12. Links http://jakarta.apache.org/jmeter/ http://www.xcitestudios.com/ https://cloudant.com/ http://couchdb.apache.org/ http://www.membase.org/ Twitter@wadewomersley