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About vpetkovic

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  1. Thanks for those useful links! dt_username_member and dt_year are indexed now I am working on ajdusting app to use pagination. One thing I noticed with above query is that load time is very similar with or without the limit: 3.0ms(30 records) vs 3.2ms(all records).
  2. Absolutelly! Thanks a lot! I will take some time to adjust db for the solution you suggested and will be implementing in second application that I have on mind for my personal use that is also based on the calendar just like this one! in meantime while I was waiting on your reply I came up with another query where I'll be grabbing all data in one query that can be used with my current setup and for the curtesy of learning more about mysql and php i'll build 3rd test enviroment to test all 3 solutions to see which one will take least time to complete the task. I read all over the web that there's no unique approach to every situation and for some one is better than the other depending on the nature of the app. So I want to get better understanding of that. Maybe you have experiance in testing laod time and give me some advice on that as well. 1. Query itself takes 2.5ms to retreive all records (~300) for one user (without any limits) and 0.4ms to retrieve only 30 records. a. But the query DIDN'T retreiv all the data and query inside the loop increases load time for sure which I'll measure with php later. 2. Query (new one that I came up while I was waiting on your latest reply - see it below) takes 3.2ms to retreive all the records for particular user a. But this query DID retreive all data and querying inside while loop is not required inside while loop and despite of longer load time of main query it could be faster since it doesn't need to run any other query where curent setup has to. (SELECT DATE_FORMAT(dt_date, '%m-%d-%Y') dt_date, count(dt_date) as date_count, GROUP_CONCAT(dt_data ORDER by dt_date DESC) dt_data, GROUP_CONCAT(dt_bodypart ORDER by dt_date DESC) dt_bodypart, GROUP_CONCAT(dt_wktype ORDER by dt_date DESC) dt_wktype, GROUP_CONCAT(dt_wkurl ORDER by dt_date DESC) dt_wkurl FROM data WHERE dt_username_member = 'admin' AND dt_year = '2015' GROUP BY dt_date ORDER BY dt_date DESC) ORDER BY dt_date ASC If you have any opinion on this I would gladly hear it
  3. Well, I gave the freedom to user to choose what it will be displayed as the workout name. I have the list with workouts saved by user or by trainer so he can choose from the list whichever and then workout name field gets automatically filled in but if user just like myself want something different to be displayed then why not. I personally when crete workouts i named them differently not just Back or Arms or Arms 1 I name them something lke 'blirzgreig' or 'Armagetsome' to easliy remind myself of the workout without opening it up becuase I get confused if I have Arms1 to Arms10 which one is actually Arms6 and what is consisted of. So when I note that I did blitzgreg workout for certain day I like to know what body part I worked out that day instead of workout name just liek you saw on the screenshot. This topic is my personal decision and doesn't have much to do with my issue here This is awesome point. idk why I didn't think of this before! Ill jump right on it and correct that! I got understand the db scheme that you suggest and make sense but code wise how would you output those arrays. I can think of the way to grab all data but how would you code wise output all dates and if there are more workouts for that day output those as well. Code wise how to get something liek this: I am not to much skilled with PHP and it seems you are so I would like to learn. Thanks a lot for all the time you put into finding the best solution for my app to boost performance and have better code.
  4. dt_data represents workout done for that day (it's user's input and points to the actual workout)... dt_wkurl is the url of the workout that user worked out that day. Take a look at the screenshot below. So take a look at 26th or 24th... I have 2 records in database with the same date but dt_data are different and dt_wktype etc. So in order to display it like that in the calendar from the screenshot I have to generate data.php as an array I showed you in previous posts. Does this make more sense now? Based on all info how would you solve the problem of running second query inside of a while loop to grab all the rows for day that has more workouts?
  5. OK i think that I should've already included data dump for you to get an idea what data you can find in 'data' tablet. Here it is:
  6. Sounds good! Only one table is involved: CREATE TABLE `data` ( `dt_id` int(11) NOT NULL AUTO_INCREMENT, `dt_username_member` varchar(30) DEFAULT NULL, `dt_date` date DEFAULT NULL, `dt_data` varchar(1000) NOT NULL, `dt_bodypart` varchar(100) DEFAULT NULL, `dt_wktype` varchar(100) DEFAULT NULL, `dt_custom_event` varchar(10000) NOT NULL, `dt_wkurl` varchar(1000) DEFAULT NULL, `dt_nwpid` varchar(100) NOT NULL DEFAULT '', `dt_year` year(4) NOT NULL, PRIMARY KEY (`dt_id`), KEY `members_clients` (`dt_username_member`) ) ENGINE=InnoDB AUTO_INCREMENT=11060 DEFAULT CHARSET=utf8; Query I sent you in email: (SELECT dt_id, DATE_FORMAT(dt_date, '%m-%d-%Y') as dt_date, dt_data, dt_bodypart, dt_wktype, dt_wkurl, dt_year, COUNT(*) as Total FROM data WHERE dt_year = '2015' and dt_username_member = 'admin' GROUP BY dt_date ORDER BY dt_date DESC LIMIT 0,100) ORDER BY dt_date ASC Calendar cannot display more than one result for the specific date if date appears more than once in an array just like this: array { '08-26-2015' : 'something', '08-26-2015' : 'something else', '08-27-2015' : 'else', } and that's why I am grouping them and running query in while loop to obtain all rows for dates that are grouped into one date and would like to achieve following: array { '08-26-2015' : 'something, something else', '08-27-2015' : 'else', } Let me know if you need any other info. Thanks!
  7. I have sent you an email as you said you are would be able to help me out. Thanks!
  8. Thanks @QuickOldCar, @gizmola, @scootstah for your replies, you really openned my eyes for things I aksed and didn't ask and I will be recoding the page and once done I'll show you what I got. Important part is that I understand the point you made and what I need to do and pretty confident I can do it right! Thanks a lot again.
  9. Sorry, I gave an answer on wrong question - no need for duplicate queries - my bad didn't even realize it. THANKS!
  10. First to thank both fo you for taking time to take a look at my case and to give me some very useful suggestions and I can't wait to implement suggestions. I created this query at very beginning of the app development with really not to much knowledge and I just wanted to make it to work but I ahve to rething my app and redo my code through out the app. Also could you be able to review my code once I modify it in that fashion to elimante all the problems you listed below? Regarding data not stored correctly I would say that data is stored correclty and in my case it applies only to links which looks like this: domain.com/workout.php?id=1 for instance and what I am doing is just rewriting it to look like this domain.com/workout-1 so it's more user firiendly. i hope this is not bad to do? do you know better way of doing it? Well I see what your are saying. It's not clasic blog site to easy implement pagination but I understand the point why you suggested it. Calendar is jsut reading the data from an array from data.php and if oyu have suggestion on how to do it I am happy to hear it. I will work towards finding better solution for my calendar but this was far easiest for me to implement when I first started. Also those two queries are because I have both members and clients tables and two tables are different and store different data but I am already working on merging those two as I realize more and more I don't need it separated like I needed (at least thought so) before. regarding queries in loop - can you write me quick example on how would I achieve the same result but having query outside of loop as I did it that way cause I had no idea how to else to do it? Thanks again.
  11. You are absolutelly right. What I didn't mentions is that my account has let's say aproximately 300 records since january 1st and when I log in into it... it queries db and dinamically echo data to data.php (which is an array) so it goes like this: var codropsEvents = { 'date': 'link', 'date': 'link', 'date': 'link', 'date': 'link', } So ultimately if I have 300 records to echo ... I am sure that in a year or two i'll have 2-3 times more to display (since I want to be able to go back and see what i've done last year or so...) So load time for file 20 lines long and for 300 lines long is gonna be different i know that and aware of that (difference is not huge - maybe like 300-400 ms). Test I performed with querying db each time I laod the page and loading cached file is pretty different. Example: quering db and loading the page comepletely takes 2.5s and loading cached file takes 0.65s. Appart from recoding the php file (data.php - attached) that pulls records from db (I know it's terrible) what are other suggestions on load time and performance for php apps and situations like mine data.php
  12. Good Day all, I am developing personal fitness app using PHP and it came to my intention that I might need to integrate some sort of smart caching in order to possibly increase application performance and specific page load time! Let me brief you with info on the page I need your opinion and advice on: Once logged in, full page calendar is displayed and it is user specific workouts that are displayed in the calendar. Calendar itself is created by js and it is loading extremely fast on its own. It displays items into it from an array from help js file (data,js) At first I had each user have its own data.js file but I have switched to one dynamic js/php file (data.php) that retreives items from MySQL db and dynamically populate appropriate data for that specific user. It works and it loads fast. Personally I use that app every day for my own purposes (before I try to have more users using it) and what I noticed is that page load decreased by having more items in calendar (obviously) and with with more users using the app in the same time server load will increase a lot - so before everything I would like to have that data.php optimized as much as possible to improve application performance in a long run and to prepare it for higher load. What I've tried so far and what are my ideas on how to achieve what I want: I tried integrating following cache and it decreased load time by a lot by serving cache file which expired every x seconds/minutes/hours but I ran into one simple issue that I found solution for but not sure it that's ideal or there's some other better and smarter ways to do it. Problem: When user tries to add item to the calendar (and ajax is responsible for it) changes are not displayed until cache is expired but I want to have them see the changes right away and not to wait for cache to expire (because they won't even know of it). To short cache expiration time - what's the point of cache in this case, right?! To long cache expiration time - not the point to have user to wait or thing it doesn't work when they add workouts into calendar. Possibly the best solution: I thought to have each user to have it's own cache folder where they will store cached files of data.php (plus in the future I can integrate to store cache for some other pages) and then to modify script (that add things into a calendar) to delete record from db where cache file name is stored and to automatically delete cache file from actual cache folder - that way it will force new cache file to be created (because it doesn't exist any more) and record of that cache file name inserted into a database. Simply put it will create new cache file each time new workout is added to calendar and user will be able to see changes right away but if nothing added to the calendar cache file will be served and server load and numbers of queries sent to db will be drastically decreased. Question for you: What do you think about my problem and approach I came up with for solving app performance issue? Can you think of some better, smarter and more elegant solution/approach? Do you have any other advice or suggestions? Any help wil be appreciated! Thanks in advance! cache_footer.php cache_header.php
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