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  • Usability improvement: Links now underlined on mouseover February 12, 2024
    Links on PubMed are now underlined on mouseover. This update is based on recommendations from the U.S. Web Design System (USWDS)​.
  • PubMed 2024 Baseline Released and DTD updated December 20, 2023
    The National Library of Medicine (NLM) has released the 2024 production year PubMed Baseline files and the first set of 2024 PubMed Update files have been posted. Regular daily updates have resumed.The updated 2024 PubMed DTD is available here​.
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    ​The GR field in PubMed has been renamed from "Grant Number" to "Grants and Funding" and a new section about grants and funding has been added to the PubMed User Guide. These updates to the field name and supporting documentation are being made to increase the overall transparency of funding information in PubMed. These updates […]
  • Proximity Searching Now Available for Affiliation Search Field August 16, 2023
    ​Proximity searching is now available in PubMed for the Affiliation field in addition to the Title and Title/Abstract fields. Proximity searching in PubMed was introduced in November 2022; for more information and FAQs, see: PubMed Update: Proximity Search Now Available in PubMed​.
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    ​The "Sort by" drop-down menu used to change the sort order of PubMed search results has been moved out of the "Display options" button and now appears as a standalone feature at the top of the search results page, making it easier and faster to change the sort order of your search results.​
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    ​PubMed has been updated to streamline the display of lengthy author lists in search results. When viewing search results in the Summary display format, author lists are now truncated after 1,200 characters followed by an ellipsis (…) and a link to "See abstract for full author list". In practice, this change applies to citations with […]
  • Journal Filter Category Renamed January 5, 2023
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  • MESH Update December 8, 2022
    ​PubMed MEDLINE indexed citations and the MeSH database have been updated with 2023 MeSH vocabulary.
  • Proximity Searching November 29, 2022
    ​Proximity searching is now available in PubMed. You can use proximity searching to search for multiple terms appearing in any order within a specified distance of one another in the [Title] or [Title/Abstract] fields.
  • Favorites Button Updated to Collections Button November 16, 2022
    ​The Collections button has the same functionality as Send to: Collections. Send to: Collections will continue to be available in PubMed with no changes. The change from a Favorites button to Collections button was made to provide the same functionality and user experience in both PubMed and PMC. It will also be added to article pages […]

Citrix Netscaler 10 Understanding Basic Web Site/Application Configuration



Configuring Citrix Netscaler can be very daunting, there are so many options and getting started with VIPs, SNIPs, MIPs can be confusing.  That said configuring web applications and sites for access is actually straightforward once the Netscaler is networked.   You have two basic components and they are both managed through Load Balancing, whether you have one web server or 50 load balancing allows you to link end users to Netscaler and Netscaler to you web servers.  I prefer to start with the resources that are already being accessed, the back-end in this configuration is one or more web servers, if it’s one you aren’t actually “load balancing” but the process is virtually identical.

1) ADD WEB SERVER:  Click Load Balancing > Servers   Add the server by IP address, this is not a VIP, but the actual IP the web server can be reached at.

2) ADD SERVICE:  Click Load Balancing > Service Here you configure the service of the back end server, in the case of HTTP/S all you are doing is specifying what protocol and port to use, so in the simplest case you select HTTP from the list.  Yu then link this HTTP designation to the server and you have a service for that server on HTTP.

NOTE: This is where you add a monitor, in this scenario a monitor allows Netscaler to test it’s own access to the back end.  If you just select HTTP then a simple http request will be made to your service root to check that it responds.   OOTB this monitor fires very frequently, every 3 seconds or so.  The status of your service and virtual server will be based on the monitor.

3)  ADD VIRTUAL SERVER:  Click Load Balancing > Virtual Servers.  To set-up the route to Netscaler for end-users and link it to the Service you created.   Create a Virtual Server in Load Balancing section and assign a VIP to it (Netscaler Virtual IP…provided by your networking team).  Typically the VIP will have the desired end-user accessible DNS entry pointing to it as well, unless it’s being accessed by IP.  You will add  the VIP as provided and name it in the top section in Load Balancing.  Once you add the name and VIP you just select the checkbox for the named Service you created, it is listed in the section below by name, you may have to toggle to show Services instead of Service Groups.

4) TEST THE SET-UP:  Now when an end user browses for the DNS entry which points to the Netscaler VIP they will be routed through Netscaler to your back-end HTTP Service on port 80.  If your back-end server does not have the DNS entry configured in host headers and there is more than one web site bound to http port 80 you have to add the host header.

 

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