#ColdFusion Query Caching

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ColdFusion Database Pooling and Query Caching: Optimizing Performance for Scalable Applications

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Adobe Coldfusion Server

To see a list of SQL Server versions that ColdFusion supports, go to www.adobe.com/go/learn_cfu_cfsysreqs_en. Use the settings in the following table to connect ColdFusion to SQL Server:

Adobe Coldfusion Server

ColdFusion uses the Web Server Configuration Tool to configure an external web server with the modules and settings that the connector requires connect to ColdFusion. You can run the Web Server Configuration Tool through either the command-line interface or the graphical user interface (GUI). That’s what ColdFusion Server Auto-Lockdown does: it stops hackers dead in their tracks even after they have gained access. Once a hack is detected, a lockdown can be implemented to keep the remaining, unhacked parts of your server safe. And it works at the flick of a virtual switch. In this article, you will learn.

Adobe Coldfusion Application Server

Adobe Coldfusion Servers

Setting

Description

CF Data Source Name

The data source name (DSN) that ColdFusion uses to connect to the data source.

Database

The database to which this data source connects.

Server

The name of the server that hosts the database that you want to use. If the database is local, enclose the word local in parentheses. If you are running SQL Server locally (or using MSDE), specify 127.0.0.1 for the

server name instead of the actual instance name.

Port

The number of the TCP/IP port that the server monitors for connections.

User name

The user name that ColdFusion passes to the JDBC driver to connect to the data source if a ColdFusion application does not supply a user name (for example, in a cfquery tag).

Password

The password that ColdFusion passes to the JDBC driver to connect to the data source if a ColdFusion application does not supply a password (for example, in a cfquery tag).

Description

(Optional) A description for this connection.

Connection String

A field that passes database-specific parameters, such as login credentials, to the data source.

Select Method

Determines whether server cursors are used for SQL queries.

The Direct method provides more efficient retrieval of data when you retrieve recordsets in a forward-only direction and you limit your SQL Server connection to a single open SQL statement at a time. This is typical for ColdFusion applications.

The Cursor method lets you have multiple open SQL statements on a connection. This is not typical for ColdFusion applications, unless you use pooled statements.

Limit Connections

Specifies whether ColdFusion limits the number of database connections for the data source. If you enable this option, use the Restrict Connections To field to specify the maximum.

Restrict Connections To

Specifies the maximum number of database connections for the data source. To use this restriction, enable the Limit Connections option.

Maintain Connections

ColdFusion establishes a connection to a data source for every operation that requires one. Enable this option to improve performance by caching the data source connection.

String Format

Enable this option if your application uses Unicode data in DBMS-specific Unicode data types, such as National Character or nchar.

Max Pooled Statements

Enables reuse of prepared statements (that is, stored procedures and queries that use the cfqueryparam tag). Although you tune this setting based on your application, start by setting it to the sum of the following:

Unique cfquery tags that use the cfqueryparam tag

Unique cfstoredproc tags

Timeout (min)

The number of minutes that ColdFusion MX maintains an unused connection before destroying it.

Interval (min)

The time (in minutes) that the server waits between cycles to check for expired data source connections to close.

Disable Connections

If selected, suspends all client connections.

Login Timeout (sec)

The number of seconds before ColdFusion times out the data source connection login attempt.

CLOB

Select to return the entire contents of any CLOB/Text columns in the database for this data source. If not selected, ColdFusion retrieves the number of characters specified in the Long Text Buffer setting.

BLOB

Select to return the entire contents of any BLOB/ Image columns in the database for this data source. If not selected, ColdFusion retrieves the number of characters specified in the BLOB Buffer setting.

LongText Buffer

The default buffer size, used if Enable Long Text Retrieval (CLOB) is not selected. The default value is 64000 bytes.

BLOB Buffer

The default buffer size, used if the BLOB option is not selected. The default value is 64000 bytes.

Allowed SQL

The SQL operations that can interact with the current data source.

Validation query

Called when a connection from the pool is resued. This can slow query response time because an additional query is generated. Configure the validation query just before restarting the database to verify all connections, but remove the validation query after restarting the database to avoid any performance loss.

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Enterprise Ready Applications

The 2016 Adobe ColdFusion release offers features which make state-of-the-art performance, scalability, and security central to large-scale enterprise deployment of web apps. This 2016 ColdFusion version continues offering features which work alongside other enterprise technologies to make ColdFusion an excellent hub for enterprise.

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Security Code Analyzer: The 2016 ColdFusion release includes an inbuilt security analyzer which has the power to scan even the largest ColdFusion builds with massive amounts of code in order to recognize any security vulnerabilities in the code. When you need to maintain a large base of code over a long period of time, this can be incredibly helpful. You can garner a detailed report for specific ColdFusion Builder folders, files, and whole projects simply by scanning with ColdFusion Builder 2016, which is fully supported by the ColdFusion 2016 server. This security analysis will cover all of the main CFML code security vulnerabilities. It even notes the specific line number which you can then jump to, as well as the specific details of the vulnerability and potential ways for you to solve the vulnerability to make it more secure.

Security Enhancements: The 2016 ColdFusion release newly supports Microsoft's NTLM authentification. It does this on CFOBJECT, CFINVOKE, and CFSHAREPOINT tags. Just like that, the sharepoint integration feature set of ColdFusion is newly usable with NTLM authentication as simple web services authentication enabled via NTLM authentication.

PDF Archival: The 2016 release of ColdFusion newly supports PDF/A-2b standards for archiving PDFs, which are archived to let PDFs become self-contained documents which will easily be opened by any later versions of Acrobat Reader without encountering any problems.

Performance Improvements: The 2016 ColdFusion release offers a wide range of performance improvements to the runtime. These enhancements include array access, scope search, and cached queries, and will allow your existing applications to run up to 30% faster when you upgrade them to ColdFusion 2016.

API Management Platform for Enterprise: The API Manager in the 2016 ColdFusion release is easily scalable so it can reach whichever level of enterprise deployment you need. ColdFusion 2016 has been tested with respect to high scalability and low latency over varying loads. You can also set up API Manager as a cluster to let you reach high scalability. It acts as a load balancer which can let you configure the way that you want end point URLs of APIs to be hit. Multiple endpoint After you've configured multiple endpoint URLs, you can easily select either a round-robin or weighted round-robin algorithm to access your endpoints. Your built-in data and alaytics stores can be tuned even more specifically to meet your performance and scalability needs.

SOAP Gateway: The benefits of API Manager can equally be applied to SOAP APIs. These SOAP APIs can be quickly and easily imported onto API Manager once you've provided the WSDL file. When they've been imported, the access control mechanism, SLAs, and caching can all easily be configured thanks to the API Manager's simple user interface.

Connector Enhancements: The ColdFusion 2016 release doesn't need manually reconfigured connectors once you've applied updates or hot fixes to the connectors. It's easy for you to configure custom connector settings for any individual site from the ColdFusion server.

Other PDF Enhancements: You can systematically attach and extract attachments to PDF files using the new ColdFusion 2016 version. Comments on PDF files can be exported onto XFDF files, and you can do the same thing in the opposite direction. You can also export PDF metadata to an XMP file, or vice versa, to ensure that you have standard metadata on all PDFs produced by your organization. You can even apply stamps to your PDF files by choosing a predefined stamp or creating your own.

PDF Redaction: You can now redact PDFs using the CFPDF tag. Redaction makes secure information invisible to non-authorized users, so your documentation is even more secure. Given specific co-ordinates for a PDF, the content within those co-ordinates will be redacted to make that specific content invisible in the PDF file.

PDF Sanitization: You can also make use of a new action known as sanitize thanks to the CFPDF tag. Sanitizing a PDF makes sure that sensitive information (which may be specific to an organization) that is embedded in metadata, JavaScript, or other sensitive portions of the PDF is not shared with the audience. A sanitized PDF can be shared with individuals outside of an organization without worries about it unintentionally sharing sensitive information.

External Storage for Session Scope: ColdFusion 2016 provides storage for the session scope in a distributed external cache. This directly affects the scalability of ColdFusion 2016, meaning that all information about users is stored in a session even when a significant amount of users are accessing ColdFusion at the same time.

API Caching: The API Manager in the 2016 ColdFusion release lets you organize caching for your APIs to achieve increased throughput at lessened response times. This cache is fully configurable through the administrator portal. This allows for caching to be set up at individual methods of an API simply by enabling caching for the given method.