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Bringing Linux to the Enterprise With Cold Fusion 4.5.1
One of the biggest criticisms of Linux in the IT world is its lack of available robust server-side applications. Sure, enterprises have Apache and sendmail, but they don''t have the wide range of server products, lik e application servers and database-management products, that you do in the Solaris and Windows NT world.One of the biggest criticisms of Linux in the IT world is the lack of available robust server-side applications for it. The variety of server products available in the Solaris and Windows NT world simply does not exist for Linux. The release of Cold Fusion 4.5.1 may change this.
By and large that'' s true, but more and more server-software vendors are realizing that Linux support is a smart business proposition, provided there a re accompanying software tools to fit specific needs. The latest entry in the Linux enterprise-software field is Cold Fusion 4.5.1 f or Linux. Allaire pioneered the application-server field, and with this upcoming release, Linux should be considered a serious playe r in the enterprise-server market. Cold Fusion 4.5.1 for Linux joins IBM''s WebSphere and BEA''s WebLogic as serious enterprise-leve l application server that run on Linux.
We downloaded the Enterprise Edition (all 28.8 MG) of Cold Fusion 4.5.1 from Allaire ''s Web site last week and put it through its paces. (The beta version of Cold Fusion 4.5 for Linux was reviewed in LinuxPlanet; much of this review is based on that beta review, as little changed between the b eta version and this final release.)
One of the biggest past criticisms of Cold Fusion is that it was developed originally a nd exclusively for the Windows platform. With version 4.5.1, however, Cold Fusion is extended with native Linux and Sun Solaris supp ort. (An HP-UX release is also planned for sometime in 2000.)
Cold Fusion 4.5.1''s Linux support, however, isn''t as extensi ve as we''d like: Allaire currently supports Cold Fusion 4.5.1 only on Red Hat Linux 6.0 or 6.1 running Apache HTTP Server 1.3.6 or 1.3.9. (To use this technology requires some small changes in Linux configuration. The ksh shell is installed, and you must compile in some optional modules into Apache.) That''s a shame, as the clustering technologies in TurboLinux or the sheer performance of Sla ckware Linux would be perfectly suited to an application server in an enterprise situation. We hope Allaire puts some effort into ma king sure that Cold Fusion 4.5.1 runs on a wide variety of Linux distributions (an effort to do so, according to the Allaire Cold Fu sion release notes, is currently under way).
On the Windows platform, Cold Fusion 4.5.1 works with a variety of technologies , including any Web server running a Common Gateway Interface (CGI). That wide variety of support should be replicated in the Linux and Unix worlds.
E mbracing Java
Cold Fusion is now much more extensible with support for technologies other than CFML. Most notable is the Jav a support, and Allaire added this support in a big way with a number of enhancements. The most apparent is Java Object and Enterpris e JavaBeans (EJB) connectivity, where a Cold Fusion application can connect to any EJB server to access complex business logic or th ird-party distributed components. On a practical level, this means an enterprise that is already committed to Java and EJB can integ rate Cold Fusion technology into an existing scheme.
The Java support continues with a servlets engine, JRun, that gives Col d Fusion applications the capability to call Java servlets. In addition, Cold Fusion Extensions (CFXs) can be created in Java. The a dd-on market for Cold Fusion is a lively one, so this Java support is important for many smaller developers.
There are other noteworthy integration features in version 4.5.1, including support for XML and Character Large Binary Objects (CLOB), which is use d for encoding binary objects and transmitting them via XML. The product offers support for Web Distributed Data Exchange (WDDX) 1.0 , used to exchange complex data between servers and other programming environments. Cold Fusion 4.5.1 also increases support for e-m ail on the enterprise level in two ways. First, it supports LDAP 3.0 for directory access and authentication, moving past the Window s directory support found in previous versions of Cold Fusion. Second, there are advanced tools for creating e-mail-centered applica tions with new support for controlling mail headers, BCC fields, and multiple file attachments.
One area where Cold Fusion 4 .5.1 for Linux is lacking is in the security field, as many of the security tools are still centered around Windows NT. Even though Allaire has done a good job of migrating Cold Fusion to the Linux world, the server still does not "feel" like a Linux application i n some ways, and security is one area where Windows NT-only tools are still more advanced than their Linux counterparts. For example , Cold Fusion security can be set up to work with an existing Windows NT security system architecture, with authenticated users for an application limited to privileges authorized through Windows security. Similarly, administrators can create OS Server Sandboxes, which process all requests under the privileges of a designated Windows NT user account. These are Windows-NT-only featured that hav e no counterparts in the Linux version.