GitHub
Tests: 12 • Commercial: 2 • Pet projects: 4 • Legacy: 4
Total: 22

.NET Framework

Test
2021

Project Request

ASP.NET MVC • C# • SQL Server
Idea of the project: if someone wants to order a project development, here you can send an application.
Test
2020

ProjectC

ASP.NET MVC • C# • JSON • jQuery
JSON data processing.
Test
2020

Vehicle Maintenance

ASP.NET MVC • VB.NET • JSON
Idea of the project: if someone wants to order a project development, here you can send an application.
Test
2019

Movie Navigator

ASP.NET MVC • VB.NET
Request information about movie from IMDB.
Test
2018

Customers Exchange

ASP.NET MVC • C# • SQL Server
Automated teller machine emulation.
Test
2016

ATM

ASP.NET MVC • C#
Automated teller machine emulation.

.NET Core

Pet project
2022

Mail Daemon

.NET 9 • Console • JSON
Utility to send mails with customizable settings.

Custom

Code
2024

Buns of code

.NET Framework • C# • JavaScript
Code snippets from my projects, ready to use; tiny tests; code examples.

PHP

Test
2024

Mediabox

PHP 8 • Laravel 11 • Vue.js • Composer • SQLite
Test project for media files management.
Test
2020

Loan Castle

PHP • MariaDB
Jums jāizstrādā kāda lielāk projekta prototips. Izstrādājot prototipu, paturiet prātā, ka projektam attīstoties, šo prototipu varētu vajadzēt pilnveidot.
Test
2020

Content Management

PHP • MySQL • AJAX
Создать простой сайт, где будет страница с формой для авторизации и страница для авторизованного пользователя.
Test
2019

Laravel

PHP • Laravel • Vue.js • Composer • SQLite
Izveidot aplikāciju, kura ik pēc noteikta intervāla (60 sekundes) veic ierakstu datubāzē izmantojot Laravel freimworka iebūvēto funkcionalitāti.
Test
2019

Phone Check

PHP • JavaScript • JSON • Docker
Implement application to detect country by phone number.

Frontend

Test
2021

Forex Wall

npm • React
For this exercise, what we need is a simple live wall for tracking currencies.

Business projects

Commercial
2008

Certification Center

.NET Framework 4.8 • ASP.NET Web Forms • C# • LINQ • SQL Server • ADO.NET • Dapper • JavaScript • jQuery • Git
Transport registration and certification services in Latvia, Customer Relationship Management.
Commercial
2000

Amerikas Auto

.NET Framework 4.8 • ASP.NET Web Forms • C# • LINQ • SQL Server • ADO.NET • Entity Framework • JavaScript • jQuery • Git
Car service and spare parts for all USA and European car models, Customer Relationship Management.

Pet projects

Pet project
2023

Geolocation Assistant

.NET 8 • ASP.NET Core • C# • Web API • JSON • Git
Website for determining geolocation by IP or geotagged photo.
Pet project
2008

Web Dynamics

.NET Framework 4.8 • ASP.NET Web Forms • C# • LINQ • Web API • JSON • SQL Server • Dapper • JavaScript • jQuery • SVG • Git
Software development blog. Articles, books, videos, content management.
Pet project
2000

Blackball

.NET Framework 4.8 • ASP.NET Web Forms • C# • LINQ • Web API • JSON • XML • SQL Server • Dapper • JavaScript • jQuery • SVG • Git
My entertainment portal created from scratch.

Good old times

Legacy
2000

DOS Clock

Turbo Pascal • Assembler
Digital clock.
Legacy
2000

BrainOut

Turbo Pascal • Assembler
Tank battle game.
Legacy
1999

Airport Administrator

Turbo Pascal
Курсовая работа в институте.
Legacy
1998

Atomizer

Turbo Pascal • Assembler
Atomizer, aka «Studio2D». Graphic raster editor. AGI is my own «Atomizer Generated Image» file format.

Laravel

2019 Test

Izveidot aplikāciju, kura ik pēc noteikta intervāla (60 sekundes) veic ierakstu datubāzē izmantojot Laravel freimworka iebūvēto funkcionalitāti.

PHP Laravel Vue.js Composer SQLite
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Root / vendor / symfony / http-kernel / HttpCache / HttpCache.php
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * This code is partially based on the Rack-Cache library by Ryan Tomayko, * which is released under the MIT license. * (based on commit 02d2b48d75bcb63cf1c0c7149c077ad256542801) * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\HttpKernel\HttpCache; use Symfony\Component\HttpFoundation\Request; use Symfony\Component\HttpFoundation\Response; use Symfony\Component\HttpKernel\HttpKernelInterface; use Symfony\Component\HttpKernel\TerminableInterface; /** * Cache provides HTTP caching. * * @author Fabien Potencier <fabien@symfony.com> */ class HttpCache implements HttpKernelInterface, TerminableInterface { private $kernel; private $store; private $request; private $surrogate; private $surrogateCacheStrategy; private $options = []; private $traces = []; /** * Constructor. * * The available options are: * * * debug If true, exceptions are thrown when things go wrong. Otherwise, the cache * will try to carry on and deliver a meaningful response. * * * trace_level May be one of 'none', 'short' and 'full'. For 'short', a concise trace of the * master request will be added as an HTTP header. 'full' will add traces for all * requests (including ESI subrequests). (default: 'full' if in debug; 'none' otherwise) * * * trace_header Header name to use for traces. (default: X-Symfony-Cache) * * * default_ttl The number of seconds that a cache entry should be considered * fresh when no explicit freshness information is provided in * a response. Explicit Cache-Control or Expires headers * override this value. (default: 0) * * * private_headers Set of request headers that trigger "private" cache-control behavior * on responses that don't explicitly state whether the response is * public or private via a Cache-Control directive. (default: Authorization and Cookie) * * * allow_reload Specifies whether the client can force a cache reload by including a * Cache-Control "no-cache" directive in the request. Set it to ``true`` * for compliance with RFC 2616. (default: false) * * * allow_revalidate Specifies whether the client can force a cache revalidate by including * a Cache-Control "max-age=0" directive in the request. Set it to ``true`` * for compliance with RFC 2616. (default: false) * * * stale_while_revalidate Specifies the default number of seconds (the granularity is the second as the * Response TTL precision is a second) during which the cache can immediately return * a stale response while it revalidates it in the background (default: 2). * This setting is overridden by the stale-while-revalidate HTTP Cache-Control * extension (see RFC 5861). * * * stale_if_error Specifies the default number of seconds (the granularity is the second) during which * the cache can serve a stale response when an error is encountered (default: 60). * This setting is overridden by the stale-if-error HTTP Cache-Control extension * (see RFC 5861). */ public function __construct(HttpKernelInterface $kernel, StoreInterface $store, SurrogateInterface $surrogate = null, array $options = []) { $this->store = $store; $this->kernel = $kernel; $this->surrogate = $surrogate; // needed in case there is a fatal error because the backend is too slow to respond register_shutdown_function([$this->store, 'cleanup']); $this->options = array_merge([ 'debug' => false, 'default_ttl' => 0, 'private_headers' => ['Authorization', 'Cookie'], 'allow_reload' => false, 'allow_revalidate' => false, 'stale_while_revalidate' => 2, 'stale_if_error' => 60, 'trace_level' => 'none', 'trace_header' => 'X-Symfony-Cache', ], $options); if (!isset($options['trace_level']) && $this->options['debug']) { $this->options['trace_level'] = 'full'; } } /** * Gets the current store. * * @return StoreInterface A StoreInterface instance */ public function getStore() { return $this->store; } /** * Returns an array of events that took place during processing of the last request. * * @return array An array of events */ public function getTraces() { return $this->traces; } private function addTraces(Response $response) { $traceString = null; if ('full' === $this->options['trace_level']) { $traceString = $this->getLog(); } if ('short' === $this->options['trace_level'] && $masterId = array_key_first($this->traces)) { $traceString = implode('/', $this->traces[$masterId]); } if (null !== $traceString) { $response->headers->add([$this->options['trace_header'] => $traceString]); } } /** * Returns a log message for the events of the last request processing. * * @return string A log message */ public function getLog() { $log = []; foreach ($this->traces as $request => $traces) { $log[] = sprintf('%s: %s', $request, implode(', ', $traces)); } return implode('; ', $log); } /** * Gets the Request instance associated with the master request. * * @return Request A Request instance */ public function getRequest() { return $this->request; } /** * Gets the Kernel instance. * * @return HttpKernelInterface An HttpKernelInterface instance */ public function getKernel() { return $this->kernel; } /** * Gets the Surrogate instance. * * @return SurrogateInterface A Surrogate instance * * @throws \LogicException */ public function getSurrogate() { return $this->surrogate; } /** * {@inheritdoc} */ public function handle(Request $request, $type = HttpKernelInterface::MASTER_REQUEST, $catch = true) { // FIXME: catch exceptions and implement a 500 error page here? -> in Varnish, there is a built-in error page mechanism if (HttpKernelInterface::MASTER_REQUEST === $type) { $this->traces = []; // Keep a clone of the original request for surrogates so they can access it. // We must clone here to get a separate instance because the application will modify the request during // the application flow (we know it always does because we do ourselves by setting REMOTE_ADDR to 127.0.0.1 // and adding the X-Forwarded-For header, see HttpCache::forward()). $this->request = clone $request; if (null !== $this->surrogate) { $this->surrogateCacheStrategy = $this->surrogate->createCacheStrategy(); } } $this->traces[$this->getTraceKey($request)] = []; if (!$request->isMethodSafe(false)) { $response = $this->invalidate($request, $catch); } elseif ($request->headers->has('expect') || !$request->isMethodCacheable()) { $response = $this->pass($request, $catch); } elseif ($this->options['allow_reload'] && $request->isNoCache()) { /* If allow_reload is configured and the client requests "Cache-Control: no-cache", reload the cache by fetching a fresh response and caching it (if possible). */ $this->record($request, 'reload'); $response = $this->fetch($request, $catch); } else { $response = $this->lookup($request, $catch); } $this->restoreResponseBody($request, $response); if (HttpKernelInterface::MASTER_REQUEST === $type) { $this->addTraces($response); } if (null !== $this->surrogate) { if (HttpKernelInterface::MASTER_REQUEST === $type) { $this->surrogateCacheStrategy->update($response); } else { $this->surrogateCacheStrategy->add($response); } } $response->prepare($request); $response->isNotModified($request); return $response; } /** * {@inheritdoc} */ public function terminate(Request $request, Response $response) { if ($this->getKernel() instanceof TerminableInterface) { $this->getKernel()->terminate($request, $response); } } /** * Forwards the Request to the backend without storing the Response in the cache. * * @param Request $request A Request instance * @param bool $catch Whether to process exceptions * * @return Response A Response instance */ protected function pass(Request $request, $catch = false) { $this->record($request, 'pass'); return $this->forward($request, $catch); } /** * Invalidates non-safe methods (like POST, PUT, and DELETE). * * @param Request $request A Request instance * @param bool $catch Whether to process exceptions * * @return Response A Response instance * * @throws \Exception * * @see RFC2616 13.10 */ protected function invalidate(Request $request, $catch = false) { $response = $this->pass($request, $catch); // invalidate only when the response is successful if ($response->isSuccessful() || $response->isRedirect()) { try { $this->store->invalidate($request); // As per the RFC, invalidate Location and Content-Location URLs if present foreach (['Location', 'Content-Location'] as $header) { if ($uri = $response->headers->get($header)) { $subRequest = Request::create($uri, 'get', [], [], [], $request->server->all()); $this->store->invalidate($subRequest); } } $this->record($request, 'invalidate'); } catch (\Exception $e) { $this->record($request, 'invalidate-failed'); if ($this->options['debug']) { throw $e; } } } return $response; } /** * Lookups a Response from the cache for the given Request. * * When a matching cache entry is found and is fresh, it uses it as the * response without forwarding any request to the backend. When a matching * cache entry is found but is stale, it attempts to "validate" the entry with * the backend using conditional GET. When no matching cache entry is found, * it triggers "miss" processing. * * @param Request $request A Request instance * @param bool $catch Whether to process exceptions * * @return Response A Response instance * * @throws \Exception */ protected function lookup(Request $request, $catch = false) { try { $entry = $this->store->lookup($request); } catch (\Exception $e) { $this->record($request, 'lookup-failed'); if ($this->options['debug']) { throw $e; } return $this->pass($request, $catch); } if (null === $entry) { $this->record($request, 'miss'); return $this->fetch($request, $catch); } if (!$this->isFreshEnough($request, $entry)) { $this->record($request, 'stale'); return $this->validate($request, $entry, $catch); } $this->record($request, 'fresh'); $entry->headers->set('Age', $entry->getAge()); return $entry; } /** * Validates that a cache entry is fresh. * * The original request is used as a template for a conditional * GET request with the backend. * * @param Request $request A Request instance * @param Response $entry A Response instance to validate * @param bool $catch Whether to process exceptions * * @return Response A Response instance */ protected function validate(Request $request, Response $entry, $catch = false) { $subRequest = clone $request; // send no head requests because we want content if ('HEAD' === $request->getMethod()) { $subRequest->setMethod('GET'); } // add our cached last-modified validator $subRequest->headers->set('if_modified_since', $entry->headers->get('Last-Modified')); // Add our cached etag validator to the environment. // We keep the etags from the client to handle the case when the client // has a different private valid entry which is not cached here. $cachedEtags = $entry->getEtag() ? [$entry->getEtag()] : []; $requestEtags = $request->getETags(); if ($etags = array_unique(array_merge($cachedEtags, $requestEtags))) { $subRequest->headers->set('if_none_match', implode(', ', $etags)); } $response = $this->forward($subRequest, $catch, $entry); if (304 == $response->getStatusCode()) { $this->record($request, 'valid'); // return the response and not the cache entry if the response is valid but not cached $etag = $response->getEtag(); if ($etag && \in_array($etag, $requestEtags) && !\in_array($etag, $cachedEtags)) { return $response; } $entry = clone $entry; $entry->headers->remove('Date'); foreach (['Date', 'Expires', 'Cache-Control', 'ETag', 'Last-Modified'] as $name) { if ($response->headers->has($name)) { $entry->headers->set($name, $response->headers->get($name)); } } $response = $entry; } else { $this->record($request, 'invalid'); } if ($response->isCacheable()) { $this->store($request, $response); } return $response; } /** * Unconditionally fetches a fresh response from the backend and * stores it in the cache if is cacheable. * * @param Request $request A Request instance * @param bool $catch Whether to process exceptions * * @return Response A Response instance */ protected function fetch(Request $request, $catch = false) { $subRequest = clone $request; // send no head requests because we want content if ('HEAD' === $request->getMethod()) { $subRequest->setMethod('GET'); } // avoid that the backend sends no content $subRequest->headers->remove('if_modified_since'); $subRequest->headers->remove('if_none_match'); $response = $this->forward($subRequest, $catch); if ($response->isCacheable()) { $this->store($request, $response); } return $response; } /** * Forwards the Request to the backend and returns the Response. * * All backend requests (cache passes, fetches, cache validations) * run through this method. * * @param Request $request A Request instance * @param bool $catch Whether to catch exceptions or not * @param Response $entry A Response instance (the stale entry if present, null otherwise) * * @return Response A Response instance */ protected function forward(Request $request, $catch = false, Response $entry = null) { if ($this->surrogate) { $this->surrogate->addSurrogateCapability($request); } // always a "master" request (as the real master request can be in cache) $response = SubRequestHandler::handle($this->kernel, $request, HttpKernelInterface::MASTER_REQUEST, $catch); // we don't implement the stale-if-error on Requests, which is nonetheless part of the RFC if (null !== $entry && \in_array($response->getStatusCode(), [500, 502, 503, 504])) { if (null === $age = $entry->headers->getCacheControlDirective('stale-if-error')) { $age = $this->options['stale_if_error']; } if (abs($entry->getTtl()) < $age) { $this->record($request, 'stale-if-error'); return $entry; } } /* RFC 7231 Sect. 7.1.1.2 says that a server that does not have a reasonably accurate clock MUST NOT send a "Date" header, although it MUST send one in most other cases except for 1xx or 5xx responses where it MAY do so. Anyway, a client that received a message without a "Date" header MUST add it. */ if (!$response->headers->has('Date')) { $response->setDate(\DateTime::createFromFormat('U', time())); } $this->processResponseBody($request, $response); if ($this->isPrivateRequest($request) && !$response->headers->hasCacheControlDirective('public')) { $response->setPrivate(); } elseif ($this->options['default_ttl'] > 0 && null === $response->getTtl() && !$response->headers->getCacheControlDirective('must-revalidate')) { $response->setTtl($this->options['default_ttl']); } return $response; } /** * Checks whether the cache entry is "fresh enough" to satisfy the Request. * * @return bool true if the cache entry if fresh enough, false otherwise */ protected function isFreshEnough(Request $request, Response $entry) { if (!$entry->isFresh()) { return $this->lock($request, $entry); } if ($this->options['allow_revalidate'] && null !== $maxAge = $request->headers->getCacheControlDirective('max-age')) { return $maxAge > 0 && $maxAge >= $entry->getAge(); } return true; } /** * Locks a Request during the call to the backend. * * @return bool true if the cache entry can be returned even if it is staled, false otherwise */ protected function lock(Request $request, Response $entry) { // try to acquire a lock to call the backend $lock = $this->store->lock($request); if (true === $lock) { // we have the lock, call the backend return false; } // there is already another process calling the backend // May we serve a stale response? if ($this->mayServeStaleWhileRevalidate($entry)) { $this->record($request, 'stale-while-revalidate'); return true; } // wait for the lock to be released if ($this->waitForLock($request)) { // replace the current entry with the fresh one $new = $this->lookup($request); $entry->headers = $new->headers; $entry->setContent($new->getContent()); $entry->setStatusCode($new->getStatusCode()); $entry->setProtocolVersion($new->getProtocolVersion()); foreach ($new->headers->getCookies() as $cookie) { $entry->headers->setCookie($cookie); } } else { // backend is slow as hell, send a 503 response (to avoid the dog pile effect) $entry->setStatusCode(503); $entry->setContent('503 Service Unavailable'); $entry->headers->set('Retry-After', 10); } return true; } /** * Writes the Response to the cache. * * @throws \Exception */ protected function store(Request $request, Response $response) { try { $this->store->write($request, $response); $this->record($request, 'store'); $response->headers->set('Age', $response->getAge()); } catch (\Exception $e) { $this->record($request, 'store-failed'); if ($this->options['debug']) { throw $e; } } // now that the response is cached, release the lock $this->store->unlock($request); } /** * Restores the Response body. */ private function restoreResponseBody(Request $request, Response $response) { if ($response->headers->has('X-Body-Eval')) { ob_start(); if ($response->headers->has('X-Body-File')) { include $response->headers->get('X-Body-File'); } else { eval('; ?>'.$response->getContent().'<?php ;'); } $response->setContent(ob_get_clean()); $response->headers->remove('X-Body-Eval'); if (!$response->headers->has('Transfer-Encoding')) { $response->headers->set('Content-Length', \strlen($response->getContent())); } } elseif ($response->headers->has('X-Body-File')) { // Response does not include possibly dynamic content (ESI, SSI), so we need // not handle the content for HEAD requests if (!$request->isMethod('HEAD')) { $response->setContent(file_get_contents($response->headers->get('X-Body-File'))); } } else { return; } $response->headers->remove('X-Body-File'); } protected function processResponseBody(Request $request, Response $response) { if (null !== $this->surrogate && $this->surrogate->needsParsing($response)) { $this->surrogate->process($request, $response); } } /** * Checks if the Request includes authorization or other sensitive information * that should cause the Response to be considered private by default. * * @return bool true if the Request is private, false otherwise */ private function isPrivateRequest(Request $request) { foreach ($this->options['private_headers'] as $key) { $key = strtolower(str_replace('HTTP_', '', $key)); if ('cookie' === $key) { if (\count($request->cookies->all())) { return true; } } elseif ($request->headers->has($key)) { return true; } } return false; } /** * Records that an event took place. */ private function record(Request $request, string $event) { $this->traces[$this->getTraceKey($request)][] = $event; } /** * Calculates the key we use in the "trace" array for a given request. */ private function getTraceKey(Request $request): string { $path = $request->getPathInfo(); if ($qs = $request->getQueryString()) { $path .= '?'.$qs; } return $request->getMethod().' '.$path; } /** * Checks whether the given (cached) response may be served as "stale" when a revalidation * is currently in progress. */ private function mayServeStaleWhileRevalidate(Response $entry): bool { $timeout = $entry->headers->getCacheControlDirective('stale-while-revalidate'); if (null === $timeout) { $timeout = $this->options['stale_while_revalidate']; } return abs($entry->getTtl()) < $timeout; } /** * Waits for the store to release a locked entry. */ private function waitForLock(Request $request): bool { $wait = 0; while ($this->store->isLocked($request) && $wait < 100) { usleep(50000); ++$wait; } return $wait < 100; } }