cfquery's caching question

I have a question (actually two) about how caching works with cfquery so I can make sure that what I'm doing on our Web site is logical. (We're on CF10)

I have a database that stores some details on each of the web pages on our site. Contact ID, title, date added/updated, whether a recent article or recommended, etc. The unique identifier for each page is the path (/ folder/subfolder/page.cfm). Because the site is organized into several major themes, there is a column to identify which page is in the subject (and it is the same as the name of the folder that set of pages is located in).

Some subjects have tons of hits and some receive very little, so I did this:

<cfquery name="getalltopics" datasource="dsn" cachedwithin="#createtimespan(0,1,0,0)#">
SELECT (columns I need
FROM pages
WHERE topic = <cfqueryparam value="#topicname#"  cfsqltype="cf_sql_varchar">
</cfquery>

<cfquery name="getpagedetails" dbtype="query">
SELECT (columns I need)
FROM getalltopics
WHERE page_id = <cfqueryparam value="#page_path#"  cfsqltype="cf_sql_varchar">
</cfquery>

So here's my question. I know that caches come into play if the query is running the same matches that is cached. So, in my mind, the fist query would make an individual of each of our subjects, cache as the pages were viewed during the day. My second cache would grasp the details of the page of the first, with several topics being cached, how the other would know who find the details of the page in the cache? The query works and is fast, but I wonder if I need to specify the topic ID in the second query.

My second question is about the cache time. If I don't createtimespan (0,1,0,0), that caches last an hour after its creation, or it doesn't last because an hour after the last time that this query is executed?

Thank you!

What I ended up doing was creating a query name based on a variable, named according to the topical, as follows:




SELECT (columns I need)
FROM pages
WHERE topic = 
 


SELECT (columns I need)
FROM #qname#
WHERE page_id =

In this way, I have (in theory) have a single cache for each topic, and my second query draws from this cache.

The implementation, I noticed a significant reduction of hits to the database (because we still use that access to this site, no matter what hit creates an .ldb file, so I can easily tell if it's getting hit). Before the change, the ldb file basically stayed there, appearing and reappear several times per second. Now, several minutes can go with any ldb, even at the height of the day, and pages are surrendered almost instantly. If I add up all my time to query for a page, I get 5 to 7 total ms.

So, he must do something.

Tags: ColdFusion

Similar Questions

Cache question? My Cache in Bridge is full, how do I do that the purge? Will I lose anything as my thumbnail or photo files that are still on my computer

Cache question? My Cache in Bridge is full, how do I do that the purge? Will I lose anything as my thumbnail or photo files that are still on my computer?

Hello

You can purge the cache of the following option

Preferences-> Cache-> purge all the Cache now

You will not loose original photos to the computer. It will remove created bridge Cache of thumbnails / images.

You can also set no.. a value of days to automatically purge older option preferences-> Cache cache.

Please let me know if you have any additional questions.

Kind regards

Anil

Adobe Bridge team

Caching question, why do you always have to do over and over again?

In Bridge, seems always, I have a 3000 images of the caches folder. Then, two weeks later, I opened this file, and it's like the bridge has never seen before. What is everything? Thank you.

Levinaderuijter wrote:

What does bloody a cache if such information is not cached in it and immediately available when opening a folder. I mean, what is then exactly what is cached?

As we mentioned in this forum often, Cache is not the strong point for the bridge. However the problem you and Kevin describe is not common.

For the cache, you can set preferences to export cache on file if possible and which should speed things up when visiting a folder with this cache file exported. Also in the preferences, there is a slider for the amount of files to store in the cache. Ideally, when the limit for that amount is reached the Cache replaces the older files, so it might be that you have him reached the limit for the central cache and lost files to the previous file cached.

When after you move the files to another folder, it must also be cached for the new location, but unfortunately enough isn't this work always as it should.

Also, you must leave bridge to give time to cache the files completely, this could take a while depending on the size of files, number of files, and speed of the processor of your Mac.

Another question, if you have changed the settings default to ACR or installed a version update for ACR with the other settings to bypass can start caching again to match thumbs with these settings.

If no other default settings of ACR are applied or in the cache limit is not reached, it should be no problem to look at a previous set file in cache.

Sequence cache questioned
Hello

Help me,

I created the sequence with the size of the cache

CREATE the SEQUENCE LOG_TEST_SEQ WITH 1 INCREMENT OF 1 MINVALUE 1 200 cached NOCYCLE ALL;

The CACHE size specified as 200, the value of the given sequence as differ by 200
28500,28501,28502, * 28503 *,.
* 28703 * 28704 28705, 28706, 28707, 28708, 28709, 28710-28711, * 28712 *.
* 28903 *, 28904, 28905, * 28906 *.
* 29103 *, 29104, 29105, * 29106 *.

Why the value of the sequence is jump than 200

Thank you
The clause of "cache" puts in cache the specified number of sequence values in the buffers in the SGA, but all the cached numbers will be lost when the database is stopped. If you want that the sequence does not jump, then you can avoid using the clause of cache.

latitude longitude coordinates SQL Server and the plot on the map of the brochure

My question is basically:
How to transform the data from SQL Server and map by unfolding?
TIP: We run 11 Coldfusion, SQL Server 2000, flyer and JQuery if that helps somehow. If I need to download a javascript library, I can easily do.
I ambulance and fire events in a database with the xy coordinates. My goal is to ask them about the news and place them on a map of the brochure. All our ambulances and fire trucks have gps in them and they broadcast at all times their location and status. Here's my query to get the latest data from gps for each truck;
/*
SQL Server 2000
David Kulpanowski
June 4, 2015
Lee County EMS
*/
SELECT
DateTimeStamp
RTRIM (CallSign) AS [Guide]
RTRIM (UnitStatus) AS [UnitStatus]
Latitude
Longitude
CONVERT (VARCHAR (15), DateTimeStamp, 106) AS [CurrentDate]
CONVERT (VARCHAR (10), DateTimeStamp, 108) AS [CurrentTime]
OF FireEMSGPSDatabase
RIGHT OUTER JOIN
(
SELECT
RTrim (CallSign) AS [Ambulance]
MAX (DateTimeStamp) AS [MostRecentTime]
OF HISTORY_201506
WHERE RTRIM (CallSign) AS "LCM__".
RTRIM GROUP (CallSign)
)
LIKE [MostRecent] on DateTimeStamp = MostRecent.MostRecentTime
ORDER BY RTRIM (CallSign) CSA
;
Shown below is an example of this query output;
Call DateTimeStamp Latitude UnitStatus Longitude CurrentDate CurrentTime
2015-06-04 17:14:17.357 LCM01 QA 26.56428 - 81.87044 June 4, 2015 17:14:17
2015-06-04 17:14:17.357 LCM01 QA 26.56428 - 81.87044 June 4, 2015 17:14:17
2015-06-04 17:14:18.670 LCM02 QA 26.64074 - 81.86507 June 4, 2015 17:14:18
2015-06-04 17:14:34.420 LCM03 AR 26.64157 - 81.90973 June 4, 2015 17:14:34
2015-06-04 17:14:20.420 LCM04 TA 26.63885 - 81.94159 June 4, 2015 17:14:20
2015-06-04 17:14:21.297 LCM05 QA 26.4377 - 82.07806 June 4, 2015 17:14:21
Below is my Coldfusion page with the flyer plan added in and the cfquery with cfoutput;
<! DOCTYPE html >
< html lang = "en" >
< head >
< meta http-equiv = "Content-Type" content = text/html"; Charset = UTF-8 "/ >"
< meta name = "viewport" content = "width = device-width, original scale = 1.0" >
" < link rel ="stylesheet"href =" http://CDN.leafletjs.com/leaflet-0.7/leaflet.CSS "/>
" < script src =" http://CDN.leafletjs.com/leaflet-0.7.3/leaflet.js "> < / script > .
< / head >
< body >
< cfquery datasource = "GPSDatabase" name = "AmbulanceLocation" >
SELECT
DateTimeStamp
RTRIM (CallSign) AS [Guide]
RTRIM (UnitStatus) AS [UnitStatus]
Latitude
Longitude
CONVERT (VARCHAR (15), DateTimeStamp, 106) AS [CurrentDate]
CONVERT (VARCHAR (10), DateTimeStamp, 108) AS [CurrentTime]
OF FireEMSGPSDatabase
RIGHT OUTER JOIN
(
SELECT
RTrim (CallSign) AS [Ambulance]
MAX (DateTimeStamp) AS [MostRecentTime]
OF HISTORY_201506
WHERE RTRIM (CallSign) AS "LCM__".
RTRIM GROUP (CallSign)
)
LIKE [MostRecent] on DateTimeStamp = MostRecent.MostRecentTime
ORDER BY RTRIM (CallSign) CSA
< / cfquery >
< cfoutput query = "AmbulanceLocation" >
< table >
< b >
< td > #DateTimeStamp # < table >
< td > #CallSign # < table >
< td > #UnitStatus # < table >
< td > #Latitude # < table >
< td > #Longitude # < table >
< td > #CurrentDate # < table >
< td > #CurrentTime # < table >
< /tr >
< /table >
< / cfoutput >
< div id = ' map' > < / div >
< script >
var L.map = map ('plan' {Center: [26.5641867068354,-81.8704100173261], fullscreenControl: true, zoom: 12});
L.tileLayer ('http://{s}.tile.osm.org/{z}/{x}/{y}.png').addTo(map);
< /script >
< / body >
< / html >
To sum it all up - I have a SQL Server query that retrieves the last my ambulances xy coordinates. I have a Coldfusion page that has a map of the brochure and the cfquery. My question is how to plot coordinates in a flyer plan. I can't understand the middle of the book to get the results of my query in terms of the brochure.
In addition, it is a dynamic environment. Ambulances are constantly in motion. This page must be dynamic, so that the page can be updated to show the latest data.

You must create the map and tile layer prior to place markers and then run your loop inside of the script tag.

I highly recommend reading through the tutorials on the site of the brochure. They go on these things in detail.

Quick start - leaflet guide - a JavaScript library for the mobile environment maps

Embedded Google maps

I used the script of HTML5 geolocation API: location in Google Maps ads
(German)
I use the built-in in folio Builder web form to add an html file that contains the script.
the goal is to have google maps shown with the current position of the users.
This works. the only problem is, he is asked to the user if it is allowed to use the current position.
and it looks like: "may" / var/mobile/Applications/F6025DED-6AE6 - 4 c))-8240-EEE6A2CD8E6B8/Library/Caches/questions/geo location/yiQ3togSMoGGXL35AXwlw/1OverlayResources/html/geolocation.html 'use your current location.
Obviously, this is not very professional or trustworthy.
you have a suggestion how can I get the effect but get a better box? as "maybe google use your current location. ?
Thanks in advance

<! DOCTYPE html >

< html lang = "de" >

< head >

< meta charset = "utf-8" / >

< title > example of HTML5 geolocation mit Hilfe von Google Maps < /title >

" < script src =" http://maps.Google.com/maps/API/js?sensor=true "> < / script > .

< / head >

< body >

< div id = "pos" style = "width: 800px;" height: 600px; ">

Your Position wird ermittelt.

< / div >

< script >

function initialize (coords) {}

var latlng = new google.maps.LatLng (coords.latitude, coords.longitude);

var myOptions = {}

Zoom: 8,

Center: latlng

mapTypeId: google.maps.MapTypeId.ROADMAP

};

var map = new google.maps.Map (document.getElementById ("pos"), myOptions);

var marker = new google.maps.Marker({)

position: latlng,.

Card: card location,

Title: "' are the yesterday :)) '"

});

}

{navigator.geolocation.getCurrentPosition (function (position)}

Initialize (position. Coords);

}, function() {}

document.getElementById('pos').innerHTML = 'Deine Position leider nicht ermittelt werden konnte';

});

< /script >

< / body >

< / html >

You get a message "Use your location" better if you use elements of the geolocation in the read API. There is an example of displaying the user's location in DPS tips > HTML examples > geolocation (by scanning up to the 3rd page). The source file so that the HTML code is available here (GPS_map_current.zip): DPS tips HTML5 examples

How to set or get _result_cache_timeout?
How to set or get the resultcache_timeout?
To Re: result cache question, I made to this blog which contains an example of changing the time (although, as with all parameters not documented, you should not change it on a real system unless instructed to do so by the Oracle Support)
```
ALTER SESSION SET "_result_cache_timeout"=1;
```
You can also change the setting at the level of the system with a call to ALTER SYSTEM (note that assuming that you always look at the same issue of challenge of PL/SQL that come into play as well the session level setting and the upgrade of the system).

Justin

Using cfif in a where clause clause

Hi all
This question is somewhat related to a previous post of mine on the polling dates. I'm trying to use a cfif statement in my where clause to determine if a field is empty or not. Here is the code:
< cfquery name = "GetPastEvents" datasource = "DSN" >
SELECT *.
SITE: calendar
WHERE DatePart ("yyyy", [StartDate]) = < cfqueryparam value = ' #Dateformat (Today, 'yyyy') # "cfsqltype = 'CF_SQL_DATE' / >
and < cfif EndDate NEQ "> < cfelse > StartDate, EndDate < / cfif > < < cfqueryparam value =" "#Today #" cfsqltype = 'CF_SQL_DATE' / > "
and Archive = < cfqueryparam value = '0' cfsqltype = "CF_SQL_INTEGER" / >
ORDER BY StartDate ASC, StartTime ASC
< / cfquery >
My question that this CF tells me EndDate is not defined. EndDate is a field in the SITE table: calendar. There must be a way to make this work, no? Thank you!

You mix the ColdFusion variables (required by cfif) and SQL column names. Think of it this way, all CF tags and function run before the SQL query is sent to SQL server. You are this mixture and try to run CF instruction on SQL Server and thus fail.

You need something like this:

SELECT *.

SITE: calendar

WHERE DatePart ("yyyy", [StartDate]) =

and)

(enddate is not null and EndDate <> )

or (enddate is null and StartDate <> )

)

and Archive =

ORDER BY StartDate ASC, StartTime ASC

Also, I think your logic cfif was back. Instead of NEQ I think you meant EQ because having an EndDate EQ "and then comparing EndDate until today (else clause) makes no sense.

It is safe to delete the files in this folder
Hi all

I am running ebsr12 on OS OR 5 12.0.6
I have a lot of files in this folder
/D01/Oracle/ORCL/inst/apps/ORCL_prod/logs/ora/10.1.2/reports/cache

Question: is - it safe delete files in this folder?

Thanks in advance.
Hello

Please see these documents.

Note: 859255.1 - Cache Directory of reports in Oracle R12 E-Business is booming
Note: 1062825.1 - Oracle EBS R12 reports Cache Directory not be cleaned

Kind regards
Hussein

CS6 bridge, at startup, is unable to read the hidden. I have purged the central cache, but the question remains. Do you have any suggestions?

I have purged the central cache, but the question remains. Do you have any suggestions?

Himarkp

Greetings!

Please follow the steps below according to your operating system.

Windows: -.
- Navigate to C:\Users\Username\AppData\Roaming\Adobe\Bridge Cs6
- Rename the folder Cache Cache.Old
MAC: -.
- Exit the bridge
- Go to the library to the user: (~/Library indicates your user library. Hold down the option key and click on the "Go" menu in the Finder bar. The option key will reveal your user library.)
- then navigate to user (your user name) / library / caches / Adobe / Bridge Cs6. here are a plug-in and and folder called cache.
- Put the two items in the Recycle Bin and restart Bridge. Deleted files will be replaced by new and empty files.
Let us know if this helps

Concerning

~ Assani

The question of performance - cached data from a large table

Hi all
I have a general question about caching, I use an Oracle 11 g R2 server.
I have a large table on 50 million lines, which is very often consulted by my application. Some query runs slowly and some are ok. But (of course) when the data in the table is already in the cache (so basically when a user asks the same thing twice or several times) it works very quickly.
Does anyone have any recommendations on the caching of data / table of this size?
Thank you very much.

Chiwatel wrote:

With the best formatting (I hope), I'm sorry, I'm not used to the new forum!

Hash value of plan: 2501344126

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| ID | Operation | Name | Begins | E - lines. E - bytes | Cost (% CPU). Pstart. Pstop | A - lines. A - time | Pads | Bed | OMem | 1Mem | Used Mem.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

| 0 | SELECT STATEMENT |                    |      1.        |      | 7232 (100) |      |      | 68539 | 00:14:20.06 |    212K | 87545 |      |      |          |

| 1. SORT ORDER BY |                |      1. 7107 | 624K | 7232 (1) |      |      | 68539 | 00:14:20.06 |    212K | 87545 | 3242K | 792KO | 2881K (0) |

2. NESTED LOOPS |                |      1.        |      |            |      |      | 68539 | 00:14:19.26 |    212K | 87545 |      |      |          |

| 3.    NESTED LOOPS |                |      1. 7107 | 624K | 7230 (1) |      |      | 70492 | 00:07:09.08 |    141K | 43779 |      |      |          |

* 4 |    INDEX RANGE SCAN | CM_MAINT_PK_ID |      1. 7107 | 284K |    59 (0) |      |      | 70492 | 00:00:04.90 |    496.    453.      |      |          |

| 5.    RANGE OF PARTITION ITERATOR.                | 70492 |      1.      |    1 (0) | KEY | KEY | 70492 | 00:07:03.32 |    141K | 43326 |      |      |          |

|* 6 |      INDEX UNIQUE SCAN | D1T400P0 | 70492 |      1.      |    1 (0) | KEY | KEY | 70492 | 00:07:01.71 |    141K | 43326 |      |      |          |

|* 7 |    TABLE ACCESS BY INDEX ROWID | D1_DVC_EVT | 70492 |      1.    49.    2 (0) | ROWID | ROWID | 68539 | 00:07:09.17 | 70656 | 43766 |      |      |          |

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Information of predicates (identified by the operation identity card):

---------------------------------------------------

4 - access("ERO".") MAINT_OBJ_CD '= 'D1-DEVICE' AND 'ERO'." PK_VALUE1 "=" 461089508922")

6 - access("ERO".") DVC_EVT_ID '=' E '. ("' DVC_EVT_ID")

7 filter (("E". "DVC_EVT_TYPE_CD"= "END-GSMLOWLEVEL-EXCP-SEV-1" OR "E" " DVC_EVT_TYPE_CD "=" STR-GSMLOWLEVEL-EXCP-SEV-1'))

Your user name has run a query to return the lines 68 000 - what type of user is, a human being cannot cope eventually with that a lot of data and it's not entirely surprising that he might take a long time to return.

One thing I would check is if you still get the same execution plan - Oracle here estimates are out by a factor of about 95 (7 100 vs 68 500 returned planned lines) may be a part of your change in the calendar refers to plan changes.

If you check the numbers you will see about half your time came to survey the unique index, and half visited the table. In general, it is hard to beat Oracle to cache algorithms, but the indexes are often much smaller than the paintings they cover, so it is possible that your best strategy is to protect this index at the expense of the table. Rather than trying to create a cache to KEEP the index, however, you MIGHT find that you get some advantage to create a cache of RECYCLING for the table, using a small percentage of available memory - the goal is to arrange things so that the table blocks that you revisit do not grow the index blocks that you will come back to memory.

Another detail to consider is that if you visit the index and the table completely random (for 68 500 sites), it is possible that you find yourself re-reading blocks several times during the visit. If you order the intermediate result set of driving all table first you find you're walk the index and the table in the order and that you don't have to reread all the blocks. It's something that only you can know, however. The code will have to change to include a view of inline with a dash of no_merge and no_eliminate_oby.

Concerning

Jonathan Lewis

Question about the lazy loading the cache

Hello
First turn off please forgive my ignorance, this if my first time with a database that is put in cache.
I'm trying to set up SQLFire so that it will be a cover for a traditional back-end RDBMS (p.6 that is applied on the RDBMS which will appear in the SQLFire cache).
In the vFabric SQLFire user, Chapter 22 'Cache SQLFire strategies' Guide mentions that this can be done through deferred data loading into the cache. I do not understand completely how to set this up and I don't see any other details in the User Guide or anywhere else.
Anyone would be able to point me to a more detailed explanation of lazy loading the cache (or be able to explain more)?
Thank you.

Hi, there are some problems with having obtained documentation out of sync from the GA version. Also based on your question, that I passed by this yesterday and hit a few challenges, so I wrote a blog post that shows how to use SQLFire for the caching of end to end. I hope it will be useful to you.

Research Manager custom, caching of the «question»
I have a custom research manager that is used on the attributes of qualitative research to provide a list of choices based on a SQL, other PLM objects. It works fine in that it shows the type of choice in the pop-up selection dialog box and fills the value of the attribute correctly when the user selects a choice and later when they consult the specification outside editing mode. The question that I am running is that, even if the result of changes to the search query, the available choices in the dialog box pop up (and those who are already related to attribute values) reflect not the updated values since they are apparently put cached after the first use of research (call AllLookupItems). The new values will be displayed after an IIS reset.

Y at - there a way to force the cache for this choice list refresh every time the pop-up dialogue box opens, and also when PLM retrieves values from existing attributes by using the custom search when the specification is viewed? Potential impact of performance of database hits are included, I was wondering if this is possible.

I appreciate all advice, thank you.
The app updates cached custom within our service of extended attribute values of research manager.
You can schedule a query cache to cache group dump "Extended attributes / Custom Sections ' which I think will purge your cached values.

Question about the management of data Cache OBIEE 10g / 11g.
Hi friends,

I have a question: how we can find the display of data in the report (in the answers or dashboard) if Cache or paintings of DW? y at - there no mechanism for this? I know that normally we can find data in tables of aggregation using file view log. Can you please help on this and I would really appreciate your help.

Cheers!
Srini
Add the suggestions above, to find the query caches

1. use followed - cache_ind_flg O/N indicates whether or not the application has reached the cache.
2 NQQuery.log will show "cache hit" (if not you will see SQL to the physical database)

There is no mechanism to track if it hits the browser cache / cache of presentation server.

I hope this helps...

Questions about close cache events and the defeat strategy "ALL".
I use near cache, and try to determine what defeat strategy would be better for me. My cards before being highly volatile, I'm considering strongly using the strategy of "EVERYTHING" for at least some of my caches.

This brings me some questions about the event cache stream closely when the strategy using ALL:

(1) should I expect an event to be published from the back cover when an element is added? (i.e. putAll() called cache before)
(2) should I expect an event to be published from the back cover when an item is deleted? (i.e. remove() called cache before)
(3) should I expect an event to be published from the back cover when an element is expelled from the rear because of size constraints?
(4) should I expect an event to appear from the back cover when an element is expelled from the rear due to the expiry?
Hi Tom,

near cache before cards do not store the entries inserted in the back cover, so if you have saved a listener on the front plane, you will get the notification to the listener on the plan before all the inserts in the back cover of other nodes.

It's a little different for entries that have been asked by the local node through the near cache (not directly on the distributed back cache). If the cache almost didn't get call so far, then they will not go into the front plane, so it's the same as if inserted directly into the back cover. It is the starting of the near cache behavior. After the first EEG puts will be cached in the front plane. Once that puts is cached in the front plane, then the listener before card will see put through the cache close to the same node, but not of other nodes.

Also, the cache near registers a listener lite, so it becomes not the input values changed, as the keys.

A listener that you entered on the back cover will see each insertion, if you do not save a MapEventFilter or a MapEventTransformer custom with the listener. A MapEventFilter can filter inserts away (I think, the cache similar to that, too).

Best regards

Robert

cfquery's caching question

Similar Questions

Maybe you are looking for