Blog about web tchnologies, services, websites, software. Especially about Erlang/OTP and related topics. http://erlycoder.com/ 2013-04-07T22:00:06-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com ErlyCoder Blog Engine

Javascript functions that implement different hashing algorithms.

http://erlycoder.com/49/javascript-hash-functions-to-convert-string-into-integer-hash- 2013-04-07T21:02:15-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

CRC32 implementation in php that returns hashes identical to PHP crc32 function and works well with unicode strings.

http://erlycoder.com/121/javascript-crc32-that-mathes-php-crc32-and-works-well-with-unicode 2012-11-19T11:07:10-05:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Article explains how to get free SSL certificate from StartSSL. Same instructions work for higher level certificates from StartSSL too,

http://erlycoder.com/85/ssl-how-to-get-a-server-certificate-from-startssl-com 2012-11-02T20:39:42-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Simple and customizable jQuery plugin for image files visualization including multiple files visualization.

http://erlycoder.com/119/html5-selected-image-preview-jquery-plugin 2012-10-09T07:13:14-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Step by step instructions for self signed ssl certificate creation using open ssl.

http://erlycoder.com/87/ssl-how-to-self-signed-ssl-certifiate-creation-with-open-ssl 2012-09-24T14:51:06-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Session cookes that do not expire ever - one more Google Chrome bug/feature that users and programmers should be aware of.

http://erlycoder.com/111/google-chrome-session-cookie-expiration-issue-feature-your-personal-data-is-insecure-now- 2012-07-26T15:06:59-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

How to fix/handle Google Chrome rounded corners bug that appears with relative or any other non-default positioning. Simple examples and more complex ones with scrolling.

http://erlycoder.com/117/google-crome-bug-related-positioning-rounded-corners-simple-solution- 2012-07-23T17:05:44-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Simple way to check dependencies and load required javascript libraries. jQuery and jQuery plugin as an example, but any other library or set of libraries can be used.

http://erlycoder.com/115/javascript-how-to-check-dependencies-and-load-missed-libraries-jquery-example- 2012-07-20T07:57:22-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

How to backup and restore the data by date from the mysql database. How to backup data for the certain date. How to restore data for the certain period of time.

http://erlycoder.com/109/php-mysql-incremental-backup-restore-implementation-download-the-script- 2012-07-19T16:48:14-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Weighted random values generation in javascript. Full javascript code is available. Algorithm selects values from array randomly taking into consideration weights.

http://erlycoder.com/105/javascript-weighted-random-value-from-array 2012-06-10T19:17:17-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Algorithm of random row selection based on the weight values contained in one of the table column. Algorithm works fast on tables with great number of rows.

http://erlycoder.com/75/using-mysql-php-select-random-row-based-on-weight 2012-06-10T19:17:11-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Code of Erlang SSL echo server and SSL client example. Code is complete and working. Pattern can be useful in real world projects.

http://erlycoder.com/89/erlang-ssl-sockets-example-ssl-echo-server-ssl-client- 2012-06-04T08:56:37-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Postfix SSL configuration. Article briefly explains how to configure Postfix smtp server to use SSL certificate. Instructions are oriented on Linux / UNIX operating system.

http://erlycoder.com/91/ssl-how-to-install-ssl-on-postfix-smtp-server 2012-06-01T19:08:58-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

eJabberd SSL configuration. Simple set of configuration instructions that just work. Instructions are oriented on Linux / UNIX operating system.

http://erlycoder.com/93/ssl-how-to-install-ssl-on-ejabberd 2012-06-01T19:07:45-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Vsftpd SSL configuration. Simple instructions on vsftpd server configuration to use SSL certificate under Linux / UNIX operating system.

http://erlycoder.com/95/ssl-how-to-install-ssl-on-vsftpd 2012-06-01T19:07:00-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Dovecot SSL configuration. Simple instruction on SSL installation and configuration for Dovecot IMAP server under Linux / UNIX operating system.

http://erlycoder.com/97/ssl-how-to-install-ssl-on-dovecot-imap-serer 2012-06-01T19:06:31-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Lighttpd SSL configuration. Explains how to install an SSL certificate for Lighttpd web server under Linux / UNIX operating system.

http://erlycoder.com/99/ssl-how-to-install-ssl-on-lighttpd 2012-05-28T19:11:42-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Erlang impementation of UDP echo server implemented using gen_udp module. UDP client code with usage examples are available also.

http://erlycoder.com/83/erlang-udp-socket-usage-example-with-gen_udp 2012-05-19T21:14:28-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Erlang implementation of samle echo server and Erlang TCP clients in examples.

http://erlycoder.com/25/erlang-tcp-server-tcp-client-sockets-with-gen_tcp 2012-05-19T21:14:14-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Few algorithms to select random rows fast and efficient way. MySQL keys usage for random row selection.

http://erlycoder.com/81/using-mysql-select-random-row-but-fast 2012-05-13T19:19:56-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Simple but proven ways to improve speed of MySQL database server and reduce hardware resources utilization.

http://erlycoder.com/77/using-mysql-ways-to-improve-speed 2012-05-13T15:06:48-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Artile describes how to convert IPv6 address in strig representation into Erlang IP address tuple representation. Source code of the module and usage examples are provided.

http://erlycoder.com/63/erlang-ipv6-string-to-erlang-ip-tuple-and-erlang-ip-tuple-to-ipv6-string 2012-04-29T17:58:10-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Prepared statements SQL syntax, php systax and speed tests against ordinary SQL queries.

http://erlycoder.com/69/php-mysql-prepared-sql-statement-vs-sql-statement 2012-04-29T17:42:16-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

I have started using tublr some time ago and really love its bookmarklet features (and actually the service itself too). So, I decided to implement bookmarklet that implements at least one of the features I like - ability to twitt selected text.

http://erlycoder.com/53/twitter-bookmarklet-select-tweet 2012-04-22T19:27:59-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Bookmarklet allows to select any text from any web page & post it to Facebook with just a single click.

http://erlycoder.com/55/facebook-bookmarklet-post-selection-to-facebook 2012-04-22T19:27:14-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Lightweight Adobe Flash policy server implemented in Erlang.

http://erlycoder.com/23/example-of-erlang-crossdomain-policy-server-for-adobe-flash 2012-04-18T13:52:31-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

How to scale MySQL with table partitioning and subpartitioning. Configuration, tables creation and important notices.

http://erlycoder.com/39/mysql-partitioning-subpartitioning-for-mysql-scalability 2012-04-15T19:34:50-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

How to setup replication (master-slave & master-master) and avoid colisions on the latest versions of MySQL server.

http://erlycoder.com/43/mysql-master-slave-and-master-master-replication-step-by-step-configuration-instructions- 2012-04-15T18:41:24-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Twitter and Facebook bookmarklets are updated to apply the bugfix.

http://erlycoder.com/67/twitter-facebook-bookmarklets-update 2012-04-05T21:56:41-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com

Erlang NIF (Native Code Functions) example. Basically article shows how to connect the library written in C and compiled with GNU gcc to the erlang code. That is very important when speed optimisation is required for some Erlang code piece. Example is ver

http://erlycoder.com/59/erlang-how-to-integrate-c-with-erlang-program-example-or-erlang-nifs-native-implemented-functions-us 2012-03-27T16:21:23-04:00 Sergiy Dzysyak dzysyak@gmail.com http://erlycoder.com