feat(postgres): set max_prepared_transactions to 16

Author: hongaar

postgres/Dockerfile.linux

@@ -7,5 +7,6 @@ ENV POSTGRES_PASSWORD=postgres
 COPY healthcheck.sh /usr/local/bin/
 
 RUN chmod u+x /usr/local/bin/healthcheck.sh
+RUN echo max_prepared_transactions = 16 >> /var/lib/postgresql/data/postgresql.conf
 
 HEALTHCHECK --interval=5s --timeout=60s CMD ["healthcheck.sh"]

postgres/postgresql.conf

@@ -123,7 +123,7 @@ shared_buffers = 128MB                  # min 128kB
 #huge_pages = try                       # on, off, or try
                                         # (change requires restart)
 #temp_buffers = 8MB                     # min 800kB
-#max_prepared_transactions = 0          # zero disables the feature
+max_prepared_transactions = 16          # zero disables the feature
                                         # (change requires restart)
 # Caution: it is not advisable to set max_prepared_transactions nonzero unless
 # you actively intend to use prepared transactions.