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Added PHPNW talks
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Derick Rethans
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debug-setup-phpnw17.xml
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debug-setup-phpnw17.xml
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<?xml version="1.0" encoding="utf-8"?>
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<presentation css="10gen-strict.css">
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<topic>PHP</topic>
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<title>Debugging Your Set-Up</title>
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<event>PHP NorthWest 2017</event>
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<location>Manchester, UK</location>
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<lat>51.15056</lat><lon>4.43284</lon>
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<date>January 27th, 2017</date>
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<speaker>Derick Rethans</speaker>
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<email>derick@mongodb.com</email>
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<twitter>derickr</twitter>
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<joindin>https://joind.in/22137</joindin>
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<slide>slides/mongodb/title.xml</slide>
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<slide>slides/mongodb/me.xml</slide>
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In this session we will look at low-level (Linux) system debugging tools to
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find out what is going on (or wrong!) with your PHP environment, although the
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techniques are also valid for other programs besides PHP. We will cover
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debugging crashes with gdb, checking out memory leaks with valgrind, and many
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other tools to find out what is going wrong, and hopefully, figure out why.
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This session teaches tools to help out with tracking down bugs, and provides
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information on how to get better at debugging connection issues, crashes, files
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not being written, etc. The session is also valuable for people who want to
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help out with providing good bug reports for Open Source projects.
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<slide>slides/debugging/storytime.xml</slide>
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- don't jump to conclusions
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- unless you know what you're doing ;-) https://jira.mongodb.org/browse/PHPC-894 / https://github.com/mongodb/mongo-php-driver/issues/514
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<slide>slides/debugging/jump-conclusions.xml</slide>
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<slide>slides/debugging/jump-memory-leak.xml</slide>
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<slide>slides/debugging/toolbox.xml</slide>
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<slide>slides/debugging/toolbox-items.xml</slide>
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<slide>slides/debugging/section-strace.xml</slide>
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<slide>slides/debugging/strace-systemcalls.xml</slide>
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<slide>slides/debugging/strace-invocation.xml</slide>
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<slide>slides/debugging/strace-invocation-phpini.xml</slide>
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<slide>slides/debugging/strace-invocation-socket.xml</slide>
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<slide>slides/debugging/demo.xml</slide>
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- strace
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- what is it?
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- how does it work?
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- php.ini loading
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<slide>slides/debugging/jump-conclusions.xml</slide>
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<slide>slides/debugging/section-lsof.xml</slide>
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<slide>slides/debugging/lsof-files-unix.xml</slide>
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<slide>slides/debugging/lsof-invocation.xml</slide>
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<slide>slides/debugging/demo.xml</slide>
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<slide>slides/debugging/lsof-invocation-cant-listen.xml</slide>
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- lsof -i
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- what is it?
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- how does it work?
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- socket with xdebug and fork
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- set size: https://youtrack.jetbrains.com/issue/WI-31522, "PHP Scripts with Background Child Process" email
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- setsize
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- small test case
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- https://github.com/sebastianbergmann/php-code-coverage/issues/488
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<slide>slides/debugging/section-gdb.xml</slide>
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<slide>slides/debugging/gdb-what-is-it.xml</slide>
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<slide>slides/debugging/gdb-backtrace.xml</slide>
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<slide>slides/debugging/gdb-symbols.xml</slide>
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<slide>slides/debugging/demo.xml</slide>
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<slide>slides/debugging/gdb-optimisation.xml</slide>
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<slide>slides/debugging/gdb-optimisation-asm.xml</slide>
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<slide>slides/debugging/gdb-optimisation-wrong.xml</slide>
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<slide>slides/debugging/gdb-short-case.xml</slide>
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<slide>slides/debugging/gdb-usage.xml</slide>
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<slide>slides/debugging/gdb-debug-core.xml</slide>
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<slide>slides/debugging/gdb-attach.xml</slide>
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<slide>slides/debugging/demo.xml</slide>
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<slide>slides/debugging/gdb-zbacktrace.xml</slide>
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- gdb
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- what is it?
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- how does it work?
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- talk about memory management in PHP
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- crashes
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- core files
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-
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- attach to running PID
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- run from within
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- httpd -X
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- symbols included
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- optimisation
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- zbacktrace
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<slide>slides/debugging/section-valgrind.xml</slide>
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<slide>slides/debugging/valgrind-how.xml</slide>
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<slide>slides/debugging/jump-memory-leak.xml</slide>
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<slide>slides/debugging/valgrind-show-leak1.xml</slide>
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<slide>slides/debugging/demo.xml</slide>
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<slide>slides/debugging/valgrind-show-leak2.xml</slide>
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<slide>slides/debugging/valgrind-show-leak3.xml</slide>
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<slide>slides/debugging/valgrind-show-leak4.xml</slide>
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<slide>slides/debugging/valgrind-show-leak5.xml</slide>
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<slide>slides/debugging/valgrind-show-leak6.xml</slide>
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<slide>slides/debugging/valgrind-wrap-up.xml</slide>
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- valgrind
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- what is it?
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- how does it work?
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- memory leaks
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- get_properties/get_gc
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- run from with in
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- use with gdb
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- USE_ZEND_ALLOC=0
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- ZEND_DONT_UNLOAD_MODULES
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** OPTIMISATION GONE WRONG **
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- gcc -S
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- what is it?
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- how does it work?
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- compiler bug with alloca: https://bugs.xdebug.org/view.php?id=1337 https://bugs.php.net/bug.php?id=73545,
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- don't use xdebug (sigh)
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- https://github.com/xdebug/xdebug/commit/c36ea38141cb9403ff4bf72602fcf4ae62e5ba1e
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- https://bugs.php.net/bug.php?id=73545
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<slide>slides/debugging/toolbox-items.xml</slide>
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<slide>slides/mongodb/questions.xml</slide>
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<slide>slides/mongodb/resources.xml</slide>
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</presentation>
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142
nonscalar-phpnw17.xml
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142
nonscalar-phpnw17.xml
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<?xml version="1.0" encoding="utf-8"?>
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<presentation css="10gen-strict.css">
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<topic>MongoDB</topic>
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<title>Storing Non-Scalar Data</title>
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<event>PHP NorthWest 2017</event>
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<location>Manchester, UK</location>
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<date>September 30th, 2017</date>
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<speaker>Derick Rethans</speaker>
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<email>derick@mongodb.com</email>
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<twitter>derickr</twitter>
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<url>http://derickrethans.nl/talks.html</url>
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<joindin>https://joind.in/22136</joindin>
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<slide>slides/mongodb/title.xml</slide>
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<slide>slides/mongodb/me.xml</slide>
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<slide>slides/mongodb/scalar-non-scalar-examples.xml</slide>
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<!-- <slide>slides/mongodb/scalar-non-scalar-example-vector.xml</slide> -->
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<slide>slides/mongodb/scalar-non-scalar-example-tag-cloud.xml</slide>
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<slide>slides/mongodb/scalar-non-scalar-example-product-properties.xml</slide>
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<!-- <slide>slides/mongodb/scalar-non-scalar-example-addresses.xml</slide> -->
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<slide>slides/mongodb/scalar-what-is-it-not.xml</slide>
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<slide>slides/mongodb/scalar-agenda.xml</slide>
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Intro into DB types and their data types
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<slide>slides/mongodb/scalar-section-dbs-and-types.xml</slide>
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Key/Value:
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Redis
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LISTS
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SETS
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HASHES
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Sorted SET
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<slide>slides/mongodb/scalar-key-value.xml</slide>
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<slide>slides/mongodb/scalar-redis.xml</slide>
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<!-- <slide>slides/mongodb/scalar-redis-lists.xml</slide> -->
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<slide>slides/mongodb/scalar-redis-sets.xml</slide>
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<slide>slides/mongodb/scalar-redis-hashses.xml</slide>
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<!-- <slide>slides/mongodb/scalar-redis-sorted-set.xml</slide> -->
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Document:
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MongoDB
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CouchDB
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Elastic Search
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<slide>slides/mongodb/scalar-document.xml</slide>
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<slide>slides/mongodb/scalar-mongodb.xml</slide>
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<slide>slides/mongodb/document-complex.xml</slide>
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<slide>slides/mongodb/phplib-crud-insert.xml</slide>
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<slide>slides/mongodb/scalar-couchdb.xml</slide>
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<slide>slides/mongodb/scalar-couchdb-example.xml</slide>
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<slide>slides/mongodb/scalar-couchdb-insert.xml</slide>
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<slide>slides/mongodb/scalar-elasticsearch.xml</slide>
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<slide>slides/mongodb/scalar-elasticsearch-example.xml</slide>
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<slide>slides/mongodb/scalar-elasticsearch-insert.xml</slide>
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Relational:
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MySQL
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JSON
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PostgreSQL
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HSTORE
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JSON
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JSONB
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<slide>slides/mongodb/scalar-relational.xml</slide>
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<slide>slides/mongodb/scalar-mysql.xml</slide>
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<slide>slides/mongodb/scalar-mysql-json.xml</slide>
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<slide>slides/mongodb/scalar-mysql-json-example.xml</slide>
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<slide>slides/mongodb/scalar-postgresql.xml</slide>
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<slide>slides/mongodb/scalar-postgresql-hstore.xml</slide>
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<slide>slides/mongodb/scalar-postgresql-jsonb.xml</slide>
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<slide>slides/mongodb/scalar-postgresql-jsonb-example.xml</slide>
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<!-- <slide>slides/mongodb/scalar-storage-overview.xml</slide> -->
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<slide>slides/mongodb/scalar-section-query.xml</slide>
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Manipulation
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Query
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Query operators for $in, $elemMatch, etc
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Query operations on nested fields
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<slide>slides/mongodb/scalar-query-redis.xml</slide>
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<slide>slides/mongodb/scalar-query-couchdb.xml</slide>
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<slide>slides/mongodb/scalar-query-mongodb.xml</slide>
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<slide>slides/mongodb/scalar-query-mongodb-aggregation.xml</slide>
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<slide>slides/mongodb/scalar-query-elasticsearch.xml</slide>
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<slide>slides/mongodb/scalar-query-mysql.xml</slide>
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<slide>slides/mongodb/scalar-query-postgresql-hstore.xml</slide>
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<!-- <slide>slides/mongodb/scalar-query-postgresql-jsonb.xml</slide> -->
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Indexes
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Redis
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MongoDB
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CouchDB
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ElasticSearch
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MySQL
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only through virtual columns
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Not on arrays
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PostgreSQL
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GIN/GIST
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Geospatial from GeoJSON sources (not PostGIS)
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<slide>slides/mongodb/indexes-title.xml</slide>
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<slide>slides/mongodb/scalar-index-redis.xml</slide>
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<slide>slides/mongodb/scalar-index-couchdb.xml</slide>
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<slide>slides/mongodb/index.xml</slide>
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<slide>slides/mongodb/scalar-index-elasticsearch.xml</slide>
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<slide>slides/mongodb/scalar-index-postgresql.xml</slide>
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<slide>slides/mongodb/scalar-index-mysql.xml</slide>
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<slide>slides/mongodb/scalar-section-manipulation.xml</slide>
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Storing/Update
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Atomicity
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ACID
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Single document with update specifiers
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Partitioning on JSON data
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Manipulation of JSON data
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<slide>slides/mongodb/scalar-atomicity.xml</slide>
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<!-- <slide>slides/mongodb/acid.xml</slide> -->
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<slide>slides/mongodb/scalar-nosql-acid.xml</slide>
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<slide>slides/mongodb/scalar-atomic-redis.xml</slide>
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<slide>slides/mongodb/scalar-atomic-couchdb.xml</slide>
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<slide>slides/mongodb/update-atomicity.xml</slide>
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Schema validation
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None can do that, besides MongoDB
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<slide>slides/mongodb/scalar-validate.xml</slide>
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<slide>slides/mongodb/document-validation.xml</slide>
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<slide>slides/mongodb/scalar-conclusion.xml</slide>
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Conclusion
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<slide>slides/mongodb/questions.xml</slide>
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<slide>slides/mongodb/resources.xml</slide>
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</presentation>
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@@ -3,7 +3,7 @@
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<list>
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<bullet>a debugger</bullet>
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<bullet>Like Xdebug/PhpStorm, but then for C programs</bullet>
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<bullet>Like Xdebug/PhpStorm, but for C programs</bullet>
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<bullet>Works through hardware interrupts</bullet>
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<bullet>Fairly low level</bullet>
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<bullet>Can be used to make a backtrace</bullet>
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