Table of Contents
This document describes how to write replicated Berkeley DB applications for Berkeley DB version 4.8. The APIs used to implement replication in your application are described here. This book describes the concepts surrounding replication, the scenarios under which you might choose to use it, and the architectural requirements that a replication application has over a transactional application.
This book is aimed at the software engineer responsible for writing a replicated DB application.
This book assumes that you have already read and understood the concepts contained in the Berkeley DB Getting Started with Transaction Processing guide.
The following typographical conventions are used within in this manual:
Structure names are represented in monospaced font, as are method
names. For example: "DB->open() is a method
on a DB handle."
Variable or non-literal text is presented in italics. For example: "Go to your DB_INSTALL directory."
Program examples are displayed in a monospaced font on a shaded background.
For example:
/* File: gettingstarted_common.h */
typedef struct stock_dbs {
DB *inventory_dbp; /* Database containing inventory information */
DB *vendor_dbp; /* Database containing vendor information */
char *db_home_dir; /* Directory containing the database
* files */
char *inventory_db_name; /* Name of the inventory database */
char *vendor_db_name; /* Name of the vendor database */
} STOCK_DBS;
In some situations, programming examples are updated from one chapter to the next. When
this occurs, the new code is presented in monospaced bold font. For example:
typedef struct stock_dbs {
DB *inventory_dbp; /* Database containing inventory information */
DB *vendor_dbp; /* Database containing vendor information */
DB *itemname_sdbp; /* Index based on the item name index */
char *db_home_dir; /* Directory containing the database
* files */
char *itemname_db_name; /* Itemname secondary database */
char *inventory_db_name; /* Name of the inventory database */
char *vendor_db_name; /* Name of the vendor database */
} STOCK_DBS;
Finally, notes of special interest are represented using a note block such as this.
Beyond this manual, you may also find the following sources of information useful when building a transactional DB application: